CVE-2021-41159
Improper client input validation for FreeRDP gateway connections allows to overwrite memory
02 Description
Improper client input validation for FreeRDP gateway connections allows to overwrite memory
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
- 1.49% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 73.6% of scored records. A rank, not a probability.
- NVD base score
- 8.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Important. 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
- 2021-10-21 00:00Z5 YR AGO
- Last updated
- 2024-08-04 02:59Z2 YR AGO
- Reserved
- 2021-09-15
- Assigning CNA
- GitHub_M
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 5.8)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:N
- Weaknesses
- CWE-787Out-of-bounds WriteBase
- Data version
- 5.1
- Document digest
- 6fb54bd3ed6d115f1c18d19f98257a6ee96cab697dcc110793ae5632886071ab
05 Affected products
06 References
- github.comhttps://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-vh34-m9h7-95xq
- lists.fedoraproject.orgFEDORA-2021-2c25f03d0bhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DWJXQOWKNR7O5HM2HFJOM4GBUFPTE3RG/
- security.gentoo.orgGLSA-202210-24https://security.gentoo.org/glsa/202210-24
07 Fixed in
AlmaLinux 8
- freerdp Fixed in 2:2.2.0-7.el8_5
- freerdp-devel Fixed in 2:2.2.0-7.el8_5
- freerdp-libs Fixed in 2:2.2.0-7.el8_5
- libwinpr Fixed in 2:2.2.0-7.el8_5
- libwinpr-devel Fixed in 2:2.2.0-7.el8_5
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
Arch Linux
- freerdp Fixed in 2:2.4.1-1
Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.
CloudLinux 8
- freerdp Fixed in 2:2.2.0-7.el8_5
- freerdp-devel Fixed in 2:2.2.0-7.el8_5
- freerdp-libs Fixed in 2:2.2.0-7.el8_5
- libwinpr Fixed in 2:2.2.0-7.el8_5
- libwinpr-devel Fixed in 2:2.2.0-7.el8_5
Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 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 2.4.1+dfsg1-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- freerdp No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- freerdp No fix yet
- freerdp2 Fixed in 2.2.0+dfsg1-0ubuntu0.18.04.2
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 20.04 LTS
- freerdp2 Fixed in 2.2.0+dfsg1-0ubuntu0.20.04.2
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 2.3.0+dfsg1-2ubuntu2
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.