CVE catalog

CVE-2022-25304

UBUNTU-

[CVE catalog]

All versions of package opcua; all versions of package asyncua are vulnerable to Denial of Service (DoS) due to a missing limitation on the number of received chunks - per single session or in total for all concurrent sessions. An attacker can exploit this vulnerability by sending an unlimited number of huge chunks (e.g. 2GB each) without sending the Final closing chunk.

Severity
Unknown
Published
Updated
Source
[NVD] · [CVE record]
EPSS
1.58% · Oct 27, 2026

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 / releasePackageVersionStatusSource
Ubuntu22.04python-opcua0.98.11-1Affected[UBUNTU-CVE-2022-25304]
Ubuntu22.04python-opcua0.98.11-1ubuntu1Affected[UBUNTU-CVE-2022-25304]
Ubuntu20.04python-opcua0.98.6-3Affected[UBUNTU-CVE-2022-25304]
Ubuntu20.04python-opcua0.98.6-3ubuntu1Affected[UBUNTU-CVE-2022-25304]
Ubuntu20.04python-opcua0.98.9-1Affected[UBUNTU-CVE-2022-25304]
Ubuntu18.04python-opcua0.90.3-1Affected[UBUNTU-CVE-2022-25304]
Debian11python-opcua0.98.11-1Affected[DEBIAN-CVE-2022-25304]
Debian11python-opcua0.98.11-2Affected[DEBIAN-CVE-2022-25304]
Provider details and historical evidence
Distribution / releasePackageVersionStatusSource
Debian11python-opcua0.98.11-1Affected[DEBIAN-CVE-2022-25304]
Debian11python-opcua0.98.11-2Affected[DEBIAN-CVE-2022-25304]
Ubuntu18.04python-opcua0.90.3-1Affected[UBUNTU-CVE-2022-25304]
Ubuntu20.04python-opcua0.98.6-3Affected[UBUNTU-CVE-2022-25304]
Ubuntu20.04python-opcua0.98.6-3ubuntu1Affected[UBUNTU-CVE-2022-25304]
Ubuntu20.04python-opcua0.98.9-1Affected[UBUNTU-CVE-2022-25304]
Ubuntu22.04python-opcua0.98.11-1Affected[UBUNTU-CVE-2022-25304]
Ubuntu22.04python-opcua0.98.11-1ubuntu1Affected[UBUNTU-CVE-2022-25304]
Original provider fields
{
  "package_releases": [],
  "fixed_versions": [],
  "distribution_packages": [
    {
      "name": "python-opcua",
      "distro": "debian",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            }
          ]
        }
      ],
      "release": "11",
      "versions": [
        "0.98.11-1",
        "0.98.11-2"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/DEBIAN-CVE-2022-25304",
      "fixed_version": "",
      "provider_source": "pypi",
      "provider_record_id": "DEBIAN-CVE-2022-25304",
      "provider_updated_at": "2026-08-27T23:04:20.062253347Z"
    },
    {
      "name": "python-opcua",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            }
          ]
        }
      ],
      "release": "18.04",
      "versions": [
        "0.90.3-1"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/UBUNTU-CVE-2022-25304",
      "fixed_version": "",
      "provider_source": "pypi",
      "provider_record_id": "UBUNTU-CVE-2022-25304",
      "provider_updated_at": "2025-10-24T04:53:31Z"
    },
    {
      "name": "python-opcua",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            }
          ]
        }
      ],
      "release": "20.04",
      "versions": [
        "0.98.6-3",
        "0.98.6-3ubuntu1",
        "0.98.9-1"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/UBUNTU-CVE-2022-25304",
      "fixed_version": "",
      "provider_source": "pypi",
      "provider_record_id": "UBUNTU-CVE-2022-25304",
      "provider_updated_at": "2025-10-24T04:53:31Z"
    },
    {
      "name": "python-opcua",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            }
          ]
        }
      ],
      "release": "22.04",
      "versions": [
        "0.98.11-1",
        "0.98.11-1ubuntu1"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/UBUNTU-CVE-2022-25304",
      "fixed_version": "",
      "provider_source": "pypi",
      "provider_record_id": "UBUNTU-CVE-2022-25304",
      "provider_updated_at": "2025-10-24T04:53:31Z"
    }
  ]
}

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

Observed:

References

[FIRST EPSS] · [OSV Package Vulnerability Database]