CVE catalog

CVE-2021-3474

openexr affected and fixed versions

There's a flaw in OpenEXR in versions before 3.0.0-beta. A crafted input file that is processed by OpenEXR could cause a shift overflow in the FastHufDecoder, potentially leading to problems with application availability.

Severity: Medium · CVSS 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Published: Mar 15, 2021, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 1.85% · Oct 27, 2026

Projects and upstream resources

[imath][Source-reported homepage]

Reported versions and fixes

Each observation applies to its named package, distribution, and release. Distribution backports can fix a vulnerability while retaining an older upstream version number.

Distribution / release	Package	Version	Status	Source
Debiantrixie	openexr	`2.5.4-1`	FixedDistribution-reported fixed boundary	[CVE-2021-3474]
Debiantrixie	openexr	`3.1.13-2`	Fixed	[CVE-2021-3474]
Debiansid	openexr	`2.5.4-1`	FixedDistribution-reported fixed boundary	[CVE-2021-3474]
Debiansid	openexr	`3.4.16+ds-1`	Fixed	[CVE-2021-3474]
Debianforky	openexr	`2.5.4-1`	FixedDistribution-reported fixed boundary	[CVE-2021-3474]
Debianforky	openexr	`3.4.16+ds-1`	Fixed	[CVE-2021-3474]
Debianbookworm	openexr	`2.5.4-1`	FixedDistribution-reported fixed boundary	[CVE-2021-3474]
Debianbookworm	openexr	`3.1.5-5`	Fixed	[CVE-2021-3474]

Showing 8 fix observations. All 33 observations, including unknown and conflicting reports, are available below.

Provider details and historical evidence

Distribution / release	Package	Version	Status	Source
Debianbookworm	openexr	`2.5.4-1`	FixedDistribution-reported fixed boundary	[CVE-2021-3474]
Debianbookworm	openexr	`3.1.5-5`	Fixed	[CVE-2021-3474]
Debianforky	openexr	`2.5.4-1`	FixedDistribution-reported fixed boundary	[CVE-2021-3474]
Debianforky	openexr	`3.4.16+ds-1`	Fixed	[CVE-2021-3474]
Debiansid	openexr	`2.5.4-1`	FixedDistribution-reported fixed boundary	[CVE-2021-3474]
Debiansid	openexr	`3.4.16+ds-1`	Fixed	[CVE-2021-3474]
Debiantrixie	openexr	`2.5.4-1`	FixedDistribution-reported fixed boundary	[CVE-2021-3474]
Debiantrixie	openexr	`3.1.13-2`	Fixed	[CVE-2021-3474]
Opensuseleap 15.2	openexr	`2.2.1-lp152.7.11.1`	UnknownSource applicability is not established	[OPENSUSE-SU-2021:0536-1]Feb 4, 2026, 4:24:15 AM UTC
Suselinux enterprise module for desktop applications 15 sp2	openexr	`2.2.1-3.24.1`	UnknownSource applicability is not established	[SUSE-SU-2021:1097-1]Feb 4, 2026, 2:50:46 AM UTC
Ubuntu16.04	openexr	`2.2.0-10ubuntu2`	UnknownSource applicability is not established	[UBUNTU-CVE-2021-3474]Apr 22, 2026, 12:56:00 PM UTC[USN-4900-1]Apr 22, 2026, 10:13:50 AM UTC
Ubuntu16.04	openexr	`2.2.0-10ubuntu2.1`	UnknownSource applicability is not established	[UBUNTU-CVE-2021-3474]Apr 22, 2026, 12:56:00 PM UTC[USN-4900-1]Apr 22, 2026, 10:13:50 AM UTC
Ubuntu16.04	openexr	`2.2.0-10ubuntu2.2`	UnknownSource applicability is not established	[UBUNTU-CVE-2021-3474]Apr 22, 2026, 12:56:00 PM UTC[USN-4900-1]Apr 22, 2026, 10:13:50 AM UTC
Ubuntu16.04	openexr	`2.2.0-10ubuntu2.3`	UnknownSource applicability is not established	[UBUNTU-CVE-2021-3474]Apr 22, 2026, 12:56:00 PM UTC[USN-4900-1]Apr 22, 2026, 10:13:50 AM UTC
Ubuntu16.04	openexr	`2.2.0-10ubuntu2.4`	UnknownSource applicability is not established	[UBUNTU-CVE-2021-3474]Apr 22, 2026, 12:56:00 PM UTC[USN-4900-1]Apr 22, 2026, 10:13:50 AM UTC
Ubuntu16.04	openexr	`2.2.0-10ubuntu2.6`	UnknownSource applicability is not established	[UBUNTU-CVE-2021-3474]Apr 22, 2026, 12:56:00 PM UTC[USN-4900-1]Apr 22, 2026, 10:13:50 AM UTC
Ubuntu16.04	openexr	`2.2.0-1ubuntu3`	UnknownSource applicability is not established	[UBUNTU-CVE-2021-3474]Apr 22, 2026, 12:56:00 PM UTC[USN-4900-1]Apr 22, 2026, 10:13:50 AM UTC
Ubuntu16.04	openexr	`2.2.0-7ubuntu1`	UnknownSource applicability is not established	[UBUNTU-CVE-2021-3474]Apr 22, 2026, 12:56:00 PM UTC[USN-4900-1]Apr 22, 2026, 10:13:50 AM UTC
Ubuntu16.04	openexr	`2.2.0-9ubuntu1`	UnknownSource applicability is not established	[UBUNTU-CVE-2021-3474]Apr 22, 2026, 12:56:00 PM UTC[USN-4900-1]Apr 22, 2026, 10:13:50 AM UTC
Ubuntu18.04	openexr	`2.2.0-11.1ubuntu1`	UnknownSource applicability is not established	[UBUNTU-CVE-2021-3474]Apr 22, 2026, 12:56:00 PM UTC[USN-4900-1]Apr 22, 2026, 10:13:50 AM UTC
Ubuntu18.04	openexr	`2.2.0-11.1ubuntu1.1`	UnknownSource applicability is not established	[UBUNTU-CVE-2021-3474]Apr 22, 2026, 12:56:00 PM UTC[USN-4900-1]Apr 22, 2026, 10:13:50 AM UTC
Ubuntu18.04	openexr	`2.2.0-11.1ubuntu1.2`	UnknownSource applicability is not established	[UBUNTU-CVE-2021-3474]Apr 22, 2026, 12:56:00 PM UTC[USN-4900-1]Apr 22, 2026, 10:13:50 AM UTC
Ubuntu18.04	openexr	`2.2.0-11.1ubuntu1.3`	UnknownSource applicability is not established	[UBUNTU-CVE-2021-3474]Apr 22, 2026, 12:56:00 PM UTC[USN-4900-1]Apr 22, 2026, 10:13:50 AM UTC
Ubuntu18.04	openexr	`2.2.0-11.1ubuntu1.4`	UnknownSource applicability is not established	[UBUNTU-CVE-2021-3474]Apr 22, 2026, 12:56:00 PM UTC[USN-4900-1]Apr 22, 2026, 10:13:50 AM UTC
Ubuntu18.04	openexr	`2.2.0-11.1ubuntu1.6`	UnknownSource applicability is not established	[UBUNTU-CVE-2021-3474]Apr 22, 2026, 12:56:00 PM UTC[USN-4900-1]Apr 22, 2026, 10:13:50 AM UTC
Ubuntu18.04	openexr	`2.2.0-11ubuntu1`	UnknownSource applicability is not established	[UBUNTU-CVE-2021-3474]Apr 22, 2026, 12:56:00 PM UTC[USN-4900-1]Apr 22, 2026, 10:13:50 AM UTC
Ubuntu20.04	openexr	`2.2.1-4.1ubuntu1`	UnknownSource applicability is not established	[UBUNTU-CVE-2021-3474]Apr 22, 2026, 12:56:00 PM UTC[USN-4900-1]Apr 22, 2026, 10:13:50 AM UTC
Ubuntu20.04	openexr	`2.3.0-6`	UnknownSource applicability is not established	[UBUNTU-CVE-2021-3474]Apr 22, 2026, 12:56:00 PM UTC[USN-4900-1]Apr 22, 2026, 10:13:50 AM UTC
Ubuntu20.04	openexr	`2.3.0-6build1`	UnknownSource applicability is not established	[UBUNTU-CVE-2021-3474]Apr 22, 2026, 12:56:00 PM UTC[USN-4900-1]Apr 22, 2026, 10:13:50 AM UTC
Ubuntu20.04	openexr	`2.3.0-6ubuntu0.1`	UnknownSource applicability is not established	[UBUNTU-CVE-2021-3474]Apr 22, 2026, 12:56:00 PM UTC[USN-4900-1]Apr 22, 2026, 10:13:50 AM UTC
Ubuntu20.04	openexr	`2.3.0-6ubuntu0.2`	UnknownSource applicability is not established	[UBUNTU-CVE-2021-3474]Apr 22, 2026, 12:56:00 PM UTC[USN-4900-1]Apr 22, 2026, 10:13:50 AM UTC
Ubuntu20.04	openexr	`2.3.0-6ubuntu0.3`	UnknownSource applicability is not established	[UBUNTU-CVE-2021-3474]Apr 22, 2026, 12:56:00 PM UTC[USN-4900-1]Apr 22, 2026, 10:13:50 AM UTC
Ubuntu20.04	openexr	`2.3.0-6ubuntu0.5`	UnknownSource applicability is not established	[UBUNTU-CVE-2021-3474]Apr 22, 2026, 12:56:00 PM UTC[USN-4900-1]Apr 22, 2026, 10:13:50 AM UTC

Original provider fields

{
  "package_releases": [
    {
      "name": "openexr",
      "status": "fixed",
      "release": "sid",
      "version": "3.4.16+ds-1"
    },
    {
      "name": "openexr",
      "status": "fixed",
      "release": "forky",
      "version": "3.4.16+ds-1"
    },
    {
      "name": "openexr",
      "status": "fixed",
      "release": "trixie",
      "version": "3.1.13-2"
    },
    {
      "name": "openexr",
      "status": "fixed",
      "release": "bookworm",
      "version": "3.1.5-5"
    }
  ],
  "fixed_versions": [
    {
      "bug": 986796,
      "name": "openexr",
      "type": "source",
      "origin": null,
      "release": "sid",
      "urgency": "not yet assigned",
      "fixed_version": "2.5.4-1"
    },
    {
      "bug": 986796,
      "name": "openexr",
      "type": "source",
      "origin": null,
      "release": "forky",
      "urgency": "not yet assigned",
      "fixed_version": "2.5.4-1"
    },
    {
      "bug": 986796,
      "name": "openexr",
      "type": "source",
      "origin": null,
      "release": "trixie",
      "urgency": "not yet assigned",
      "fixed_version": "2.5.4-1"
    },
    {
      "bug": 986796,
      "name": "openexr",
      "type": "source",
      "origin": null,
      "release": "bookworm",
      "urgency": "not yet assigned",
      "fixed_version": "2.5.4-1"
    }
  ],
  "distribution_packages": [
    {
      "name": "openexr",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
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            },
            {
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            }
          ]
        }
      ],
      "release": "16.04",
      "versions": [
        "2.2.0-1ubuntu3",
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        "2.2.0-9ubuntu1",
        "2.2.0-10ubuntu2",
        "2.2.0-10ubuntu2.1",
        "2.2.0-10ubuntu2.2",
        "2.2.0-10ubuntu2.3",
        "2.2.0-10ubuntu2.4"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/UBUNTU-CVE-2021-3474",
      "fixed_version": "2.2.0-10ubuntu2.6",
      "provider_source": "pypi",
      "provider_record_id": "UBUNTU-CVE-2021-3474",
      "provider_updated_at": "2026-04-22T12:56:00.006225Z",
      "applicability_unknown": true
    },
    {
      "name": "openexr",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
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            }
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        }
      ],
      "release": "18.04",
      "versions": [
        "2.2.0-11ubuntu1",
        "2.2.0-11.1ubuntu1",
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        "2.2.0-11.1ubuntu1.3",
        "2.2.0-11.1ubuntu1.4"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/UBUNTU-CVE-2021-3474",
      "fixed_version": "2.2.0-11.1ubuntu1.6",
      "provider_source": "pypi",
      "provider_record_id": "UBUNTU-CVE-2021-3474",
      "provider_updated_at": "2026-04-22T12:56:00.006225Z",
      "applicability_unknown": true
    },
    {
      "name": "openexr",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.3.0-6ubuntu0.5"
            }
          ]
        }
      ],
      "release": "20.04",
      "versions": [
        "2.2.1-4.1ubuntu1",
        "2.3.0-6",
        "2.3.0-6build1",
        "2.3.0-6ubuntu0.1",
        "2.3.0-6ubuntu0.2",
        "2.3.0-6ubuntu0.3"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/UBUNTU-CVE-2021-3474",
      "fixed_version": "2.3.0-6ubuntu0.5",
      "provider_source": "pypi",
      "provider_record_id": "UBUNTU-CVE-2021-3474",
      "provider_updated_at": "2026-04-22T12:56:00.006225Z",
      "applicability_unknown": true
    },
    {
      "name": "openexr",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
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            },
            {
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            }
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        }
      ],
      "release": "16.04",
      "versions": [
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        "2.2.0-7ubuntu1",
        "2.2.0-9ubuntu1",
        "2.2.0-10ubuntu2",
        "2.2.0-10ubuntu2.1",
        "2.2.0-10ubuntu2.2",
        "2.2.0-10ubuntu2.3",
        "2.2.0-10ubuntu2.4"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/USN-4900-1",
      "fixed_version": "2.2.0-10ubuntu2.6",
      "provider_source": "pypi",
      "provider_record_id": "USN-4900-1",
      "provider_updated_at": "2026-04-22T10:13:50.875333Z",
      "applicability_unknown": true
    },
    {
      "name": "openexr",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
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            },
            {
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            }
          ]
        }
      ],
      "release": "18.04",
      "versions": [
        "2.2.0-11ubuntu1",
        "2.2.0-11.1ubuntu1",
        "2.2.0-11.1ubuntu1.1",
        "2.2.0-11.1ubuntu1.2",
        "2.2.0-11.1ubuntu1.3",
        "2.2.0-11.1ubuntu1.4"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/USN-4900-1",
      "fixed_version": "2.2.0-11.1ubuntu1.6",
      "provider_source": "pypi",
      "provider_record_id": "USN-4900-1",
      "provider_updated_at": "2026-04-22T10:13:50.875333Z",
      "applicability_unknown": true
    },
    {
      "name": "openexr",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.3.0-6ubuntu0.5"
            }
          ]
        }
      ],
      "release": "20.04",
      "versions": [
        "2.2.1-4.1ubuntu1",
        "2.3.0-6",
        "2.3.0-6build1",
        "2.3.0-6ubuntu0.1",
        "2.3.0-6ubuntu0.2",
        "2.3.0-6ubuntu0.3"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/USN-4900-1",
      "fixed_version": "2.3.0-6ubuntu0.5",
      "provider_source": "pypi",
      "provider_record_id": "USN-4900-1",
      "provider_updated_at": "2026-04-22T10:13:50.875333Z",
      "applicability_unknown": true
    },
    {
      "name": "openexr",
      "distro": "opensuse",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.2.1-lp152.7.11.1"
            }
          ]
        }
      ],
      "release": "leap 15.2",
      "versions": [],
      "ecosystem": "rpm",
      "provider_url": "https://osv.dev/vulnerability/openSUSE-SU-2021:0536-1",
      "fixed_version": "2.2.1-lp152.7.11.1",
      "provider_source": "pypi",
      "provider_record_id": "OPENSUSE-SU-2021:0536-1",
      "provider_updated_at": "2026-02-04T04:24:15.668869Z",
      "applicability_unknown": true
    },
    {
      "name": "openexr",
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        {
          "type": "ECOSYSTEM",
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            {
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            },
            {
              "fixed": "2.2.1-3.24.1"
            }
          ]
        }
      ],
      "release": "linux enterprise module for desktop applications 15 sp2",
      "versions": [],
      "ecosystem": "rpm",
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      "provider_record_id": "SUSE-SU-2021:1097-1",
      "provider_updated_at": "2026-02-04T02:50:46.356876Z",
      "applicability_unknown": true
    }
  ]
}

[Debian bug #986796]

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

[libopenexr-3-1-30]Unknown
Source package: [openexr]
Details (2)
- 3.1.5-5 · amd64 · bookworm
  Fixed · Fixed: 2.5.4-1
  dsa · openexr · debian · bookworm; dsa · openexr · debian · 12
- 3.1.5-5 · arm64 · bookworm
  Fixed · Fixed: 2.5.4-1
  dsa · openexr · debian · bookworm; dsa · openexr · debian · 12
[libopenexr-dev]Unknown
Source package: [openexr]
Details (2)
- 3.1.5-5 · amd64 · bookworm
  Fixed · Fixed: 2.5.4-1
  dsa · openexr · debian · bookworm; dsa · openexr · debian · 12
- 3.1.5-5 · arm64 · bookworm
  Fixed · Fixed: 2.5.4-1
  dsa · openexr · debian · bookworm; dsa · openexr · debian · 12
[libopenexr-doc]Unknown
Source package: [openexr]
Details (2)
- 3.1.5-5 · all · bookworm
  Fixed · Fixed: 2.5.4-1
  dsa · openexr · debian · bookworm; dsa · openexr · debian · 12
- 3.1.5-5 · all · bookworm
  Fixed · Fixed: 2.5.4-1
  dsa · openexr · debian · bookworm; dsa · openexr · debian · 12
[openexr]Unknown
Details (2)
- 3.1.5-5 · amd64 · bookworm
  Fixed · Fixed: 2.5.4-1
  dsa · openexr · debian · bookworm; dsa · openexr · debian · 12
- 3.1.5-5 · arm64 · bookworm
  Fixed · Fixed: 2.5.4-1
  dsa · openexr · debian · bookworm; dsa · openexr · debian · 12

[Debian 13 (Trixie)]

[libopenexr-3-1-30]Unknown
Source package: [openexr]
Details (2)
- 3.1.13-2 · amd64 · trixie
  Fixed · Fixed: 2.5.4-1
  dsa · openexr · debian · 13
- 3.1.13-2 · arm64 · trixie
  Fixed · Fixed: 2.5.4-1
  dsa · openexr · debian · 13
[libopenexr-dev]Unknown
Source package: [openexr]
Details (2)
- 3.1.13-2 · amd64 · trixie
  Fixed · Fixed: 2.5.4-1
  dsa · openexr · debian · 13
- 3.1.13-2 · arm64 · trixie
  Fixed · Fixed: 2.5.4-1
  dsa · openexr · debian · 13
[libopenexr-doc]Unknown
Source package: [openexr]
Details (2)
- 3.1.13-2 · all · trixie
  Fixed · Fixed: 2.5.4-1
  dsa · openexr · debian · 13
- 3.1.13-2 · all · trixie
  Fixed · Fixed: 2.5.4-1
  dsa · openexr · debian · 13
[openexr]Unknown
Details (2)
- 3.1.13-2 · amd64 · trixie
  Fixed · Fixed: 2.5.4-1
  dsa · openexr · debian · 13
- 3.1.13-2 · arm64 · trixie
  Fixed · Fixed: 2.5.4-1
  dsa · openexr · debian · 13

Observed: Oct 23, 2026, 5:58:13 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]