CVE-2026-33987

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Source
https://cve.org/CVERecord?id=CVE-2026-33987
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33987.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-33987
Aliases
  • GHSA-ff8h-p5vc-wcwc
Downstream
Related
Published
2026-03-30T21:43:39.943Z
Modified
2026-07-21T23:32:08.263093Z
Severity
  • 7.1 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H CVSS Calculator
Summary
FreeRDP: Persistent Cache bmpSize Desync - Heap OOB Write
Details

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, in persistentcachereadentryv3() in libfreerdp/cache/persistent.c, persistent->bmpSize is updated before winpralignedrecalloc(). If realloc fails, bmpSize is inflated while bmpData points to the old buffer. This issue has been patched in version 3.24.2.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33987.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "fixed": "3.24.2"
                }
            ],
            "source": "AFFECTED_FIELD"
        }
    ],
    "cwe_ids": [
        "CWE-122",
        "CWE-131"
    ]
}
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
1a890eb43492b5eb707cb3dd6fc908f696e8fc1c
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 
"2026-07-21T23:32:08Z"
vanir_signatures 
[
    {
        "target": {
            "function": "persistent_cache_read_entry_v3",
            "file": "libfreerdp/cache/persistent.c"
        },
        "id": "CVE-2026-33987-62f5ba09",
        "digest": {
            "function_hash": "58849993226555931899617891628358983411",
            "length": 820.0
        },
        "deprecated": false,
        "signature_version": "v1",
        "signature_type": "Function",
        "source": "https://github.com/freerdp/freerdp/commit/1a890eb43492b5eb707cb3dd6fc908f696e8fc1c"
    },
    {
        "target": {
            "file": "libfreerdp/cache/persistent.c"
        },
        "id": "CVE-2026-33987-faf56e79",
        "digest": {
            "line_hashes": [
                "144084934384106105920872457981353433934",
                "252484022160513035315998983559827960592",
                "80475519738261571471892685644252625415",
                "120215690817063648745482991951086479253",
                "283660500509183273599708544240430802885",
                "111622323690931993230872939770812941841",
                "284999338403165042300272883371066573313",
                "100639442879197902970668115181337658042",
                "132553429521796369032411175878856853722",
                "267128613490396365009740424161732530253",
                "331635876019041395468286895483750668562",
                "265666975278017193830018786440831874747",
                "201035385124278947501646915920142299613",
                "50206377966656712332946526692353488670",
                "69725854626787657515895215948089303242",
                "168604599710556692462205224083263298979"
            ],
            "threshold": 0.9
        },
        "deprecated": false,
        "signature_version": "v1",
        "signature_type": "Line",
        "source": "https://github.com/freerdp/freerdp/commit/1a890eb43492b5eb707cb3dd6fc908f696e8fc1c"
    }
]
source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33987.json"