High 7.1Published Mar 30, 2026

CVE-2026-33987FreeRDP: Persistent Cache bmpSize Desync - Heap OOB Write

Updated under an hour ago (Oct 26, 2026, 9:50 AM ET)

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It affects FreeRDP. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, in persistent_cache_read_entry_v3() in libfreerdp/cache/persistent.c, persistent->bmpSize is updated before winpr_aligned_recalloc(). If realloc fails, bmpSize is inflated while bmpData points to the old buffer. This issue has been patched in version 3.24.2.

CVSS: 7.1 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
Weakness (CWE): CWE-122, CWE-131
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Mar 31, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

FreeRDP FreeRDP freerdp:freerdp (from the name)	before 3.24.2	CNA record
freerdp freerdp freerdp:freerdp	before 3.24.2	NVD

References

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-ff8h-p5vc-wcwcx-refsource-confirm, patch, vendor-advisory
https://github.com/FreeRDP/FreeRDP/commit/1a890eb43492b5eb707cb3dd6fc908f696e8fc1cx-refsource-misc, patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.