CVE-2026-109939

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Source
https://cve.org/CVERecord?id=CVE-2026-109939
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-109939.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-109939
Aliases
  • GHSA-cq4m-gwc5-w8rc
Downstream
Published
2026-10-13T13:27:09Z
Modified
2026-10-28T02:59:22Z
Severity
  • 7.1 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
FreeRDP 3.27.1 before 3.32.0 NULL Pointer Dereference via Cache Bitmap V3 Order
Details

FreeRDP 3.27.1 before 3.32.0 contains a NULL pointer dereference in update_read_cache_bitmap_v3_order() in libfreerdp/core/orders.c, which accesses the client bitmap cache when the CBR3_DO_NOT_CACHE flag is set, even though the cache is not yet initialized before Demand Active. A malicious or compromised RDP server can send a Cache Bitmap V3 order during connection setup to crash a connecting client that has enabled the non-default Bitmap Cache V3 feature (/cache:codec:<rfx|nsc|jpeg>).

Database specific 
{
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-476"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109939.json"
}
References

Affected packages

Git / github.com/freerdp/freerdp

Affected ranges

Type
GIT
Repo
https://github.com/freerdp/freerdp
Events
Introduced
6099a8d64624458ebce20e185a6d02a3ea791842
Fixed
d27a4f7c1c63b62a5e60e5d939ad116cfb58ffc1
Database specific
Show details 
{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "3.27.1"
                },
                {
                    "fixed": "3.32.0"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StandardRange"
        },
        {
            "cpe": "cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*",
            "range": [
                {
                    "introduced": "3.27.1"
                },
                {
                    "fixed": "3.32.0"
                }
            ],
            "source": "CPE_RANGE"
        }
    ]
}

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-109939.json"