CVE-2026-22853
6.8
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| FreeRDP | FreeRDP | < 3.20.1 | affected |
Weaknesses
- CWE-787: CWE-787: Out-of-bounds Write
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: poc
- Automatable: no
- Technical Impact: total
freerdp: FreeRDP heap-buffer-overflow
Additional References
- https://access.redhat.com/security/cve/CVE-2026-22853
- https://bugzilla.redhat.com/show_bug.cgi?id=2429647
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-22853.json
- https://access.redhat.com/errata/RHSA-2026:4121
- https://access.redhat.com/errata/RHSA-2026:3068
- https://access.redhat.com/errata/RHSA-2026:19033
References
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-47v9-p4gp-w5ch
- https://github.com/FreeRDP/FreeRDP/releases/tag/3.20.1
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