CVE catalog

CVE-2021-29623

exiv2 affected and fixed versions

Exiv2 is a C++ library and a command-line utility to read, write, delete and modify Exif, IPTC, XMP and ICC image metadata. A read of uninitialized memory was found in Exiv2 versions v0.27.3 and earlier. Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata of image files. The read of uninitialized memory is triggered when Exiv2 is used to read the metadata of a crafted image file. An attacker could potentially exploit the vulnerability to leak a few bytes of stack memory, if they can trick the victim into running Exiv2 on a crafted image file. The bug is fixed in version v0.27.4.

Severity: Medium · CVSS 5.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
Published: May 13, 2021, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 1.10% · Oct 27, 2026

Projects and upstream resources

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	exiv2	`0.27.5-1`	FixedDistribution-reported fixed boundary	[CVE-2021-29623]
Debiantrixie	exiv2	`0.28.5+dfsg-1`	Fixed	[CVE-2021-29623]
Debiansid	exiv2	`0.27.5-1`	FixedDistribution-reported fixed boundary	[CVE-2021-29623]
Debiansid	exiv2	`0.28.9+dfsg-1`	Fixed	[CVE-2021-29623]
Debianforky	exiv2	`0.27.5-1`	FixedDistribution-reported fixed boundary	[CVE-2021-29623]
Debianforky	exiv2	`0.28.9+dfsg-1`	Fixed	[CVE-2021-29623]
Debianbookworm	exiv2	`0.27.5-1`	FixedDistribution-reported fixed boundary	[CVE-2021-29623]
Debianbookworm	exiv2	`0.27.6-1`	Fixed	[CVE-2021-29623]

Showing 8 fix observations. All 15 observations, including unknown and conflicting reports, are available below.

Provider details and historical evidence

Distribution / release	Package	Version	Status	Source
UnknownRelease not reported	exiv2	`0.27.5-1`	UnknownSource applicability is not established	Provider not reported
Debianbookworm	exiv2	`0.27.5-1`	FixedDistribution-reported fixed boundary	[CVE-2021-29623]
Debianbookworm	exiv2	`0.27.6-1`	Fixed	[CVE-2021-29623]
Debianforky	exiv2	`0.27.5-1`	FixedDistribution-reported fixed boundary	[CVE-2021-29623]
Debianforky	exiv2	`0.28.9+dfsg-1`	Fixed	[CVE-2021-29623]
Debiansid	exiv2	`0.27.5-1`	FixedDistribution-reported fixed boundary	[CVE-2021-29623]
Debiansid	exiv2	`0.28.9+dfsg-1`	Fixed	[CVE-2021-29623]
Debiantrixie	exiv2	`0.27.5-1`	FixedDistribution-reported fixed boundary	[CVE-2021-29623]
Debiantrixie	exiv2	`0.28.5+dfsg-1`	Fixed	[CVE-2021-29623]
Opensusetumbleweed	exiv2	`0.27.5-2.1`	UnknownSource applicability is not established	[OPENSUSE-SU-2024:12063-1]Feb 4, 2026, 2:22:07 AM UTC
Ubuntu20.04	exiv2	`0.25-4ubuntu2`	UnknownSource applicability is not established	[UBUNTU-CVE-2021-29623]Apr 22, 2026, 12:52:13 PM UTC
Ubuntu20.04	exiv2	`0.25-4ubuntu3`	UnknownSource applicability is not established	[UBUNTU-CVE-2021-29623]Apr 22, 2026, 12:52:13 PM UTC
Ubuntu20.04	exiv2	`0.27.2-8ubuntu2`	UnknownSource applicability is not established	[UBUNTU-CVE-2021-29623]Apr 22, 2026, 12:52:13 PM UTC
Ubuntu20.04	exiv2	`0.27.2-8ubuntu2.2`	UnknownSource applicability is not established	[UBUNTU-CVE-2021-29623]Apr 22, 2026, 12:52:13 PM UTC
Ubuntu20.04	exiv2	`0.27.2-8ubuntu2.4`	UnknownSource applicability is not established	[UBUNTU-CVE-2021-29623]Apr 22, 2026, 12:52:13 PM UTC

Original provider fields

{
  "package_releases": [
    {
      "name": "exiv2",
      "status": "fixed",
      "release": "sid",
      "version": "0.28.9+dfsg-1"
    },
    {
      "name": "exiv2",
      "status": "fixed",
      "release": "forky",
      "version": "0.28.9+dfsg-1"
    },
    {
      "name": "exiv2",
      "status": "fixed",
      "release": "trixie",
      "version": "0.28.5+dfsg-1"
    },
    {
      "name": "exiv2",
      "status": "fixed",
      "release": "bookworm",
      "version": "0.27.6-1"
    }
  ],
  "fixed_versions": [
    {
      "bug": 988481,
      "name": "exiv2",
      "type": "source",
      "origin": null,
      "release": "sid",
      "urgency": "not yet assigned",
      "fixed_version": "0.27.5-1"
    },
    {
      "bug": 988481,
      "name": "exiv2",
      "type": "source",
      "origin": null,
      "release": "forky",
      "urgency": "not yet assigned",
      "fixed_version": "0.27.5-1"
    },
    {
      "bug": 988481,
      "name": "exiv2",
      "type": "source",
      "origin": null,
      "release": "trixie",
      "urgency": "not yet assigned",
      "fixed_version": "0.27.5-1"
    },
    {
      "bug": 988481,
      "name": "exiv2",
      "type": "source",
      "origin": null,
      "release": "bookworm",
      "urgency": "not yet assigned",
      "fixed_version": "0.27.5-1"
    }
  ],
  "distribution_packages": [
    {
      "name": "exiv2",
      "fixed_version": "0.27.5-1",
      "applicability_unknown": true
    },
    {
      "name": "exiv2",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.27.2-8ubuntu2.4"
            }
          ]
        }
      ],
      "release": "20.04",
      "versions": [
        "0.25-4ubuntu2",
        "0.25-4ubuntu3",
        "0.27.2-8ubuntu2",
        "0.27.2-8ubuntu2.2"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/UBUNTU-CVE-2021-29623",
      "fixed_version": "0.27.2-8ubuntu2.4",
      "provider_source": "pypi",
      "provider_record_id": "UBUNTU-CVE-2021-29623",
      "provider_updated_at": "2026-04-22T12:52:13.057072Z",
      "applicability_unknown": true
    },
    {
      "name": "exiv2",
      "distro": "opensuse",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.27.5-2.1"
            }
          ]
        }
      ],
      "release": "tumbleweed",
      "versions": [],
      "ecosystem": "rpm",
      "provider_url": "https://osv.dev/vulnerability/openSUSE-SU-2024:12063-1",
      "fixed_version": "0.27.5-2.1",
      "provider_source": "pypi",
      "provider_record_id": "OPENSUSE-SU-2024:12063-1",
      "provider_updated_at": "2026-02-04T02:22:07.459648Z",
      "applicability_unknown": true
    }
  ]
}

[Debian bug #988481]

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

[exiv2]Unknown
Details (2)
- 0.27.6-1 · amd64 · bookworm
  Fixed · Fixed: 0.27.5-1
  dsa · exiv2 · debian · bookworm; dsa · exiv2 · debian · 12
- 0.27.6-1 · arm64 · bookworm
  Fixed · Fixed: 0.27.5-1
  dsa · exiv2 · debian · bookworm; dsa · exiv2 · debian · 12
[libexiv2-27]Unknown
Source package: [exiv2]
Details (2)
- 0.27.6-1 · amd64 · bookworm
  Fixed · Fixed: 0.27.5-1
  dsa · exiv2 · debian · bookworm; dsa · exiv2 · debian · 12
- 0.27.6-1 · arm64 · bookworm
  Fixed · Fixed: 0.27.5-1
  dsa · exiv2 · debian · bookworm; dsa · exiv2 · debian · 12
[libexiv2-dev]Unknown
Source package: [exiv2]
Details (2)
- 0.27.6-1 · amd64 · bookworm
  Fixed · Fixed: 0.27.5-1
  dsa · exiv2 · debian · bookworm; dsa · exiv2 · debian · 12
- 0.27.6-1 · arm64 · bookworm
  Fixed · Fixed: 0.27.5-1
  dsa · exiv2 · debian · bookworm; dsa · exiv2 · debian · 12
[libexiv2-doc]Unknown
Source package: [exiv2]
Details (2)
- 0.27.6-1 · all · bookworm
  Fixed · Fixed: 0.27.5-1
  dsa · exiv2 · debian · bookworm; dsa · exiv2 · debian · 12
- 0.27.6-1 · all · bookworm
  Fixed · Fixed: 0.27.5-1
  dsa · exiv2 · debian · bookworm; dsa · exiv2 · debian · 12

[Debian 13 (Trixie)]

[exiv2]Unknown
Details (2)
- 0.28.5+dfsg-1 · amd64 · trixie
  Fixed · Fixed: 0.27.5-1
  dsa · exiv2 · debian · 13
- 0.28.5+dfsg-1 · arm64 · trixie
  Fixed · Fixed: 0.27.5-1
  dsa · exiv2 · debian · 13
[libexiv2-28]Unknown
Source package: [exiv2]
Details (2)
- 0.28.5+dfsg-1 · amd64 · trixie
  Fixed · Fixed: 0.27.5-1
  dsa · exiv2 · debian · 13
- 0.28.5+dfsg-1 · arm64 · trixie
  Fixed · Fixed: 0.27.5-1
  dsa · exiv2 · debian · 13
[libexiv2-data]Unknown
Source package: [exiv2]
Details (2)
- 0.28.5+dfsg-1 · all · trixie
  Fixed · Fixed: 0.27.5-1
  dsa · exiv2 · debian · 13
- 0.28.5+dfsg-1 · all · trixie
  Fixed · Fixed: 0.27.5-1
  dsa · exiv2 · debian · 13
[libexiv2-dev]Unknown
Source package: [exiv2]
Details (2)
- 0.28.5+dfsg-1 · amd64 · trixie
  Fixed · Fixed: 0.27.5-1
  dsa · exiv2 · debian · 13
- 0.28.5+dfsg-1 · arm64 · trixie
  Fixed · Fixed: 0.27.5-1
  dsa · exiv2 · debian · 13
[libexiv2-doc]Unknown
Source package: [exiv2]
Details (2)
- 0.28.5+dfsg-1 · all · trixie
  Fixed · Fixed: 0.27.5-1
  dsa · exiv2 · debian · 13
- 0.28.5+dfsg-1 · all · trixie
  Fixed · Fixed: 0.27.5-1
  dsa · exiv2 · debian · 13

[openSUSE Tumbleweed]

[exiv2]Unknown
Source package: [exiv2]
Details (1)
- 0.28.8-2.3 · x86_64 · tumbleweed
  Fixed · Fixed: 0.27.5-2.1
  dsa · exiv2 · opensuse · tumbleweed
[exiv2-lang]Unknown
Source package: [exiv2]
Details (1)
- 0.28.8-2.3 · noarch · tumbleweed
  Unknown · Fixed: 0.27.5-2.1
  Version impact unknown
  dsa · exiv2 · opensuse · tumbleweed
[libexiv2-28]Unknown
Source package: [exiv2]
Details (1)
- 0.28.8-2.3 · x86_64 · tumbleweed
  Unknown · Fixed: 0.27.5-2.1
  Version impact unknown
  dsa · exiv2 · opensuse · tumbleweed
[libexiv2-28-x86-64-v3]Unknown
Source package: [exiv2]
Details (1)
- 0.28.8-2.3 · x86_64 · tumbleweed
  Unknown · Fixed: 0.27.5-2.1
  Version impact unknown
  dsa · exiv2 · opensuse · tumbleweed
[libexiv2-devel]Unknown
Source package: [exiv2]
Details (1)
- 0.28.8-2.3 · x86_64 · tumbleweed
  Unknown · Fixed: 0.27.5-2.1
  Version impact unknown
  dsa · exiv2 · opensuse · tumbleweed

Observed: Oct 23, 2026, 5:56:13 PM UTC

References

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