CVE-2026-33984

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-33984
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33984.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-33984
Aliases
  • GHSA-8469-2xcx-frf6
Downstream
Related
Published
2026-03-30T21:42:57.090Z
Modified
2026-07-22T03:22:02.035359Z
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",
    "unresolved_ranges": [
        {
            "source": "AFFECTED_FIELD",
            "extracted_events": [
                {
                    "fixed": "3.24.2"
                }
            ]
        }
    ]
}
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
dc7fdb165095139be779a4000199bc1706b06ad5
Database specific 
{
    "source": "REFERENCES"
}

Affected versions

1.*
1.0-beta1
1.0-beta2
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
3.2.0
3.3.0
3.4.0
3.5.0
3.5.1

Database specific

vanir_signatures_modified 
"2026-07-22T03:22:02Z"
vanir_signatures 
[
    {
        "signature_type": "Line",
        "target": {
            "file": "libfreerdp/codec/clear.c"
        },
        "deprecated": false,
        "source": "https://github.com/freerdp/freerdp/commit/dc7fdb165095139be779a4000199bc1706b06ad5",
        "id": "CVE-2026-33984-cc313d21",
        "signature_version": "v1",
        "digest": {
            "line_hashes": [
                "255620317009823173716794771041383794154",
                "45382684195642432902215227819199050758",
                "37388766999991567979854639852611980240",
                "261795573816620269820705386991962313160",
                "215911420867761152498354173213009403257",
                "332010693786912959878788595254727331335",
                "36461259977012459159480986689834207710",
                "49211117325874623436401642442358680092"
            ],
            "threshold": 0.9
        }
    }
]
source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33984.json"