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DEBIAN-CVE-2026-22853

Type: advisorySource: OSV1 source record

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, RDPEAR’s NDR array reader does not perform bounds checking on the on‑wire element count and can write past the heap buffer allocated from hints, causing a heap buffer overflow in ndr_read_uint8Array. This vulnerability is fixed in 3.20.1.

Announced Group revision 1
Original source ↗

DEBIAN-CVE-2026-22853

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:DEBIAN-CVE-2026-22853

freerdp2

Source reference: /affected/0/package/name

Affected versions
2.10.0+dfsg1-1

Source reference: /affected/0/versions

2.10.0+dfsg1-1.1

Source reference: /affected/0/versions

2.11.2+dfsg1-1

Source reference: /affected/0/versions

2.11.2+dfsg1-1.1~exp1

Source reference: /affected/0/versions

2.11.2+dfsg1-1.1~exp2

Source reference: /affected/0/versions

2.11.5+dfsg1-1

Source reference: /affected/0/versions

2.11.7+dfsg1-1

Source reference: /affected/0/versions

2.11.7+dfsg1-2

Source reference: /affected/0/versions

2.11.7+dfsg1-3

Source reference: /affected/0/versions

2.11.7+dfsg1-4

Source reference: /affected/0/versions

2.11.7+dfsg1-5

Source reference: /affected/0/versions

2.11.7+dfsg1-6

Source reference: /affected/0/versions

2.11.7+dfsg1-6~deb12u1

Source reference: /affected/0/versions

Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

freerdp3

Source reference: /affected/1/package/name

Affected versions
3.15.0+dfsg-2.1

Source reference: /affected/1/versions

Fixed versions
3.15.0+dfsg-2.1+deb13u1

Source reference: /affected/1/ranges

Prerequisites
Not stated in this record

freerdp3

Source reference: /affected/2/package/name

Affected versions
3.15.0+dfsg-2.1

Source reference: /affected/2/versions

3.16.0+dfsg-1

Source reference: /affected/2/versions

3.16.0+dfsg-2

Source reference: /affected/2/versions

3.17.0+dfsg-1

Source reference: /affected/2/versions

3.17.1+dfsg-1

Source reference: /affected/2/versions

3.17.1+dfsg-2

Source reference: /affected/2/versions

3.17.2+dfsg-1

Source reference: /affected/2/versions

3.17.2+dfsg-2

Source reference: /affected/2/versions

3.17.2+dfsg-3

Source reference: /affected/2/versions

3.18.0+dfsg-1

Source reference: /affected/2/versions

3.19.0+dfsg-1

Source reference: /affected/2/versions

3.19.1+dfsg-1

Source reference: /affected/2/versions

3.20.0+dfsg-1

Source reference: /affected/2/versions

Fixed versions
3.20.2+dfsg-1

Source reference: /affected/2/ranges

Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "freerdp2",
      "purl": "pkg:deb/debian/freerdp2?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "2.10.0+dfsg1-1",
      "2.10.0+dfsg1-1.1",
      "2.11.2+dfsg1-1",
      "2.11.2+dfsg1-1.1~exp1",
      "2.11.2+dfsg1-1.1~exp2",
      "2.11.5+dfsg1-1",
      "2.11.7+dfsg1-1",
      "2.11.7+dfsg1-2",
      "2.11.7+dfsg1-3",
      "2.11.7+dfsg1-4",
      "2.11.7+dfsg1-5",
      "2.11.7+dfsg1-6",
      "2.11.7+dfsg1-6~deb12u1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-22853.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "3.15.0+dfsg-2.1+deb13u1"
          }
        ]
      }
    ],
    "package": {
      "name": "freerdp3",
      "purl": "pkg:deb/debian/freerdp3?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "3.15.0+dfsg-2.1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-22853.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "3.20.2+dfsg-1"
          }
        ]
      }
    ],
    "package": {
      "name": "freerdp3",
      "purl": "pkg:deb/debian/freerdp3?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "3.15.0+dfsg-2.1",
      "3.16.0+dfsg-1",
      "3.16.0+dfsg-2",
      "3.17.0+dfsg-1",
      "3.17.1+dfsg-1",
      "3.17.1+dfsg-2",
      "3.17.2+dfsg-1",
      "3.17.2+dfsg-2",
      "3.17.2+dfsg-3",
      "3.18.0+dfsg-1",
      "3.19.0+dfsg-1",
      "3.19.1+dfsg-1",
      "3.20.0+dfsg-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-22853.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#56209 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement

Revision history

  1. DEBIAN-CVE-2026-22853 · Revision 1Source updated