CVE-2023-40567
Out-Of-Bounds Write in FreeRDP
02 Description
Out-Of-Bounds Write in FreeRDP
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 1.50% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 74.0% of scored records. A rank, not a probability.
- NVD base score
- 9.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2023-08-31 21:42Z3 YR AGO
- Last updated
- 2025-11-03 20:35Z12 MO AGO
- Reserved
- 2023-08-16
- Assigning CNA
- GitHub_M
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 6.5)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
- Weaknesses
- CWE-787Out-of-bounds WriteBase
- Data version
- 5.2
- Document digest
- f6bc6d42e97099cb13a9ae650bd335af49622d6e5bf639ecafe1293c124ba9db
05 Affected products
06 References
- github.comhttps://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-2w9f-8wg4-8jfp
- github.comhttps://github.com/FreeRDP/FreeRDP/blob/5be5553e0da72178a4b94cc1ffbdace9ceb153e5/libfreerdp/codec/clear.c#L612-L618
- github.comhttps://github.com/FreeRDP/FreeRDP/blob/5be5553e0da72178a4b94cc1ffbdace9ceb153e5/libfreerdp/codec/clear.c#L843-L845
- lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OH2ATH2BKDNKCJAU4WPPXK4SHLE3UJUV/
- lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/A6LLDAPEXRDJOM3PREDDD267SSNT77DP/
- lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IHMTGKCZXJPQOR5ZD2I4GPDNP2DKRXMF/
- lists.debian.orghttps://lists.debian.org/debian-lts-announce/2023/10/msg00008.html
- security.gentoo.orghttps://security.gentoo.org/glsa/202401-16
- lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/02/msg00016.html
07 Fixed in
AlmaLinux 9
- freerdp Fixed in 2:2.11.2-1.el9
- freerdp-devel Fixed in 2:2.11.2-1.el9
- freerdp-libs Fixed in 2:2.11.2-1.el9
- libwinpr Fixed in 2:2.11.2-1.el9
- libwinpr-devel Fixed in 2:2.11.2-1.el9
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
CloudLinux 9
- freerdp Fixed in 2:2.11.2-1.el9
- freerdp-devel Fixed in 2:2.11.2-1.el9
- freerdp-libs Fixed in 2:2.11.2-1.el9
- libwinpr Fixed in 2:2.11.2-1.el9
- libwinpr-devel Fixed in 2:2.11.2-1.el9
Derived from AlmaLinux 9. Partial coverage: only packages taken from AlmaLinux 9 are listed.
Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
Debian 12
- freerdp2 Fixed in 2.11.7+dfsg1-6~deb12u1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 20.04 LTS
- freerdp2 Fixed in 2.2.0+dfsg1-0ubuntu0.20.04.5
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 22.04 LTS
- freerdp2 Fixed in 2.6.1+dfsg1-3ubuntu2.4
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 18.04 LTS
- freerdp2 Fixed in 2.2.0+dfsg1-0ubuntu0.18.04.4+esm1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.