CVE-2026-23533

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Source
https://cve.org/CVERecord?id=CVE-2026-23533
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-23533.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-23533
Aliases
  • GHSA-32q9-m5qr-9j2v
Downstream
Related
Published
2026-01-19T17:07:18.283Z
Modified
2026-02-28T00:13:49.091072Z
Severity
  • 7.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P CVSS Calculator
Summary
FreeRDP has heap-buffer-overflow in clear_decompress_residual_data
Details

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.21.0, a client-side heap buffer overflow occurs in the RDPGFX ClearCodec decode path when maliciously crafted residual data causes out-of-bounds writes during color output. A malicious server can trigger a client‑side heap buffer overflow, causing a crash (DoS) and potential heap corruption with code‑execution risk depending on allocator behavior and surrounding heap layout. Version 3.21.0 contains a patch for the issue.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23533.json",
    "cwe_ids": [
        "CWE-122"
    ]
}
References

Affected packages

Git / github.com/freerdp/freerdp

Affected ranges

Type
GIT
Repo
https://github.com/freerdp/freerdp
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
6f5d0048f006a2d2ffc9b9fa05f0e98db464c5a4

Affected versions

1.*
1.0-beta1
1.0-beta2
1.0-beta3
1.0-beta4
1.0-beta5
1.0.0
1.0.1
1.1.0-beta+2013071101
1.1.0-beta1
1.1.0-beta1+android2
1.1.0-beta1+android3
1.1.0-beta1+android4
1.1.0-beta1+android5
1.1.0-beta1+ios1
1.1.0-beta1+ios2
1.1.0-beta1+ios3
1.1.0-beta1+ios4
1.2.0-beta1+android7
1.2.0-beta1+android9
2.*
2.0.0
2.0.0-beta1+android10
2.0.0-beta1+android11
2.0.0-rc0
2.0.0-rc1
2.0.0-rc2
2.0.0-rc3
2.0.0-rc4
3.*
3.0.0
3.0.0-beta1
3.0.0-beta2
3.0.0-beta3
3.0.0-beta4
3.0.0-rc0
3.1.0
3.10.0
3.10.1
3.10.2
3.10.3
3.11.0
3.11.1
3.12.0
3.13.0
3.14.0
3.14.1
3.15.0
3.16.0
3.17.0
3.17.1
3.17.2
3.18.0
3.19.0
3.19.1
3.2.0
3.20.0
3.20.1
3.20.2
3.3.0
3.4.0
3.5.0
3.5.1
3.6.0
3.6.1
3.6.2
3.6.3
3.7.0
3.9.0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-23533.json"