CVE-2026-33984

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Source
https://cve.org/CVERecord?id=CVE-2026-33984
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-33984.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-33984
Aliases
  • GHSA-8469-2xcx-frf6
Downstream
Related
Published
2026-03-30T21:42:57.090Z
Modified
2026-04-21T10:59:00.308063187Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS Calculator
Summary
FreeRDP: ClearCodec resize_vbar_entry() Heap OOB Write
Details

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, in resizevbarentry() in libfreerdp/codec/clear.c, vBarEntry->size is updated to vBarEntry->count before the winpralignedrecalloc() call. If realloc fails, size is inflated while pixels still points to the old, smaller buffer. On a subsequent call where count <= size (the inflated value), realloc is skipped. The caller then writes count * bpp bytes of attacker-controlled pixel data into the undersized buffer, causing a heap buffer overflow. This issue has been patched in version 3.24.2.

Database specific 
{
    "cwe_ids": [
        "CWE-122",
        "CWE-131"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33984.json",
    "cna_assigner": "GitHub_M"
}
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
3028b706908f81767d9b9c744a90778c28f57d61
Database specific 
{
    "source": "AFFECTED_FIELD",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "3.24.2"
        }
    ]
}

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-33984.json"