CVE catalog

CVE-2023-40576

freerdp2 affected and fixed versions

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. Affected versions are subject to an Out-Of-Bounds Read in the `RleDecompress` function. This Out-Of-Bounds Read occurs because FreeRDP processes the `pbSrcBuffer` variable without checking if it contains data of sufficient length. Insufficient data in the `pbSrcBuffer` variable may cause errors or crashes. This issue has been addressed in version 3.0.0-beta3. Users are advised to upgrade. There are no known workarounds for this issue.

Severity: High · CVSS 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: Aug 31, 2023, 10:15:00 PM UTC
Source: [NVD] · [CVE record]
EPSS: 1.24% · Oct 27, 2026

Projects and upstream resources

[freerdp3][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.

Version impact has not been established. The original provider fields are retained below.

Provider details and historical evidence

Original provider fields

{
  "package_releases": [
    {
      "name": "freerdp2",
      "status": "not affected",
      "release": "bookworm",
      "version": "2.11.7+dfsg1-6~deb12u1"
    }
  ],
  "fixed_versions": [
    {
      "bug": null,
      "name": "freerdp2",
      "type": "source",
      "origin": null,
      "release": "bookworm",
      "urgency": "unimportant",
      "fixed_version": "0"
    }
  ],
  "distribution_packages": []
}

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

[freerdp2-dev]Unknown
Source package: [freerdp2]
Details (2)
- 2.11.7+dfsg1-6~deb12u1 · amd64 · bookworm
  Not affected
  dsa · freerdp2 · debian · bookworm
- 2.11.7+dfsg1-6~deb12u1 · arm64 · bookworm
  Not affected
  dsa · freerdp2 · debian · bookworm
[freerdp2-shadow-x11]Unknown
Source package: [freerdp2]
Details (2)
- 2.11.7+dfsg1-6~deb12u1 · amd64 · bookworm
  Not affected
  dsa · freerdp2 · debian · bookworm
- 2.11.7+dfsg1-6~deb12u1 · arm64 · bookworm
  Not affected
  dsa · freerdp2 · debian · bookworm
[freerdp2-wayland]Unknown
Source package: [freerdp2]
Details (2)
- 2.11.7+dfsg1-6~deb12u1 · amd64 · bookworm
  Not affected
  dsa · freerdp2 · debian · bookworm
- 2.11.7+dfsg1-6~deb12u1 · arm64 · bookworm
  Not affected
  dsa · freerdp2 · debian · bookworm
[freerdp2-x11]Unknown
Source package: [freerdp2]
Details (2)
- 2.11.7+dfsg1-6~deb12u1 · amd64 · bookworm
  Not affected
  dsa · freerdp2 · debian · bookworm
- 2.11.7+dfsg1-6~deb12u1 · arm64 · bookworm
  Not affected
  dsa · freerdp2 · debian · bookworm
[libfreerdp2-2]Unknown
Source package: [freerdp2]
Details (2)
- 2.11.7+dfsg1-6~deb12u1 · amd64 · bookworm
  Not affected
  dsa · freerdp2 · debian · bookworm
- 2.11.7+dfsg1-6~deb12u1 · arm64 · bookworm
  Not affected
  dsa · freerdp2 · debian · bookworm
[libfreerdp-client2-2]Unknown
Source package: [freerdp2]
Details (2)
- 2.11.7+dfsg1-6~deb12u1 · amd64 · bookworm
  Not affected
  dsa · freerdp2 · debian · bookworm
- 2.11.7+dfsg1-6~deb12u1 · arm64 · bookworm
  Not affected
  dsa · freerdp2 · debian · bookworm
[libfreerdp-server2-2]Unknown
Source package: [freerdp2]
Details (2)
- 2.11.7+dfsg1-6~deb12u1 · amd64 · bookworm
  Not affected
  dsa · freerdp2 · debian · bookworm
- 2.11.7+dfsg1-6~deb12u1 · arm64 · bookworm
  Not affected
  dsa · freerdp2 · debian · bookworm
[libfreerdp-shadow2-2]Unknown
Source package: [freerdp2]
Details (2)
- 2.11.7+dfsg1-6~deb12u1 · amd64 · bookworm
  Not affected
  dsa · freerdp2 · debian · bookworm
- 2.11.7+dfsg1-6~deb12u1 · arm64 · bookworm
  Not affected
  dsa · freerdp2 · debian · bookworm
[libfreerdp-shadow-subsystem2-2]Unknown
Source package: [freerdp2]
Details (2)
- 2.11.7+dfsg1-6~deb12u1 · amd64 · bookworm
  Not affected
  dsa · freerdp2 · debian · bookworm
- 2.11.7+dfsg1-6~deb12u1 · arm64 · bookworm
  Not affected
  dsa · freerdp2 · debian · bookworm
[libuwac0-0]Unknown
Source package: [freerdp2]
Details (2)
- 2.11.7+dfsg1-6~deb12u1 · amd64 · bookworm
  Not affected
  dsa · freerdp2 · debian · bookworm
- 2.11.7+dfsg1-6~deb12u1 · arm64 · bookworm
  Not affected
  dsa · freerdp2 · debian · bookworm
[libuwac0-dev]Unknown
Source package: [freerdp2]
Details (2)
- 2.11.7+dfsg1-6~deb12u1 · amd64 · bookworm
  Not affected
  dsa · freerdp2 · debian · bookworm
- 2.11.7+dfsg1-6~deb12u1 · arm64 · bookworm
  Not affected
  dsa · freerdp2 · debian · bookworm
[libwinpr2-2]Unknown
Source package: [freerdp2]
Details (2)
- 2.11.7+dfsg1-6~deb12u1 · amd64 · bookworm
  Not affected
  dsa · freerdp2 · debian · bookworm
- 2.11.7+dfsg1-6~deb12u1 · arm64 · bookworm
  Not affected
  dsa · freerdp2 · debian · bookworm
[libwinpr2-dev]Unknown
Source package: [freerdp2]
Details (2)
- 2.11.7+dfsg1-6~deb12u1 · amd64 · bookworm
  Not affected
  dsa · freerdp2 · debian · bookworm
- 2.11.7+dfsg1-6~deb12u1 · arm64 · bookworm
  Not affected
  dsa · freerdp2 · debian · bookworm
[libwinpr-tools2-2]Unknown
Source package: [freerdp2]
Details (2)
- 2.11.7+dfsg1-6~deb12u1 · amd64 · bookworm
  Not affected
  dsa · freerdp2 · debian · bookworm
- 2.11.7+dfsg1-6~deb12u1 · arm64 · bookworm
  Not affected
  dsa · freerdp2 · debian · bookworm
[winpr-utils]Unknown
Source package: [freerdp2]
Details (2)
- 2.11.7+dfsg1-6~deb12u1 · amd64 · bookworm
  Not affected
  dsa · freerdp2 · debian · bookworm
- 2.11.7+dfsg1-6~deb12u1 · arm64 · bookworm
  Not affected
  dsa · freerdp2 · debian · bookworm

Observed: Oct 28, 2026, 5:44:06 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]