CVE-2026-26986

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Source
https://cve.org/CVERecord?id=CVE-2026-26986
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-26986.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-26986
Aliases
  • GHSA-crqx-g6x5-rx47
Downstream
Published
2026-02-25T21:01:16.916Z
Modified
2026-04-11T03:29:18.063543Z
Severity
  • 5.5 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P CVSS Calculator
Summary
FreeRDP has heap-use-after-free in rail_window_free
Details

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, rail_window_free dereferences a freed xfAppWindow pointer during HashTable_Free cleanup because xf_rail_window_common calls free(appWindow) on title allocation failure without first removing the entry from the railWindows hash table, leaving a dangling pointer that is freed again on disconnect. Version 3.23.0 fixes the vulnerability.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-416"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/26xxx/CVE-2026-26986.json"
}
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
b933ae18d9ad2a1d73c610868fcc30eb61654070
Fixed
b4f0f0a18fe53aa8d47d062f91471f4e9c5e0d51
Database specific 
{
    "versions": [
        {
            "introduced": "0"
        },
        {
            "fixed": "3.23.0"
        }
    ]
}

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 
"2026-04-11T03:29:18Z"
source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-26986.json"
vanir_signatures 
[
    {
        "target": {
            "function": "xf_rail_window_common",
            "file": "client/X11/xf_rail.c"
        },
        "signature_version": "v1",
        "deprecated": false,
        "digest": {
            "length": 6246.0,
            "function_hash": "240970775091850251955784091515732459955"
        },
        "id": "CVE-2026-26986-265ea781",
        "source": "https://github.com/freerdp/freerdp/commit/b4f0f0a18fe53aa8d47d062f91471f4e9c5e0d51",
        "signature_type": "Function"
    },
    {
        "target": {
            "file": "client/X11/xf_rail.c"
        },
        "signature_version": "v1",
        "deprecated": false,
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "53796879253749681813118752091107077786",
                "285643395316838240869894869564148723409",
                "281694856166870700492809226888479456399",
                "325070522899973520407875706441847113121",
                "102837558029218901955210709703231038539",
                "24932369292916951742978035890992647467",
                "303637180569525202361148970753398490927",
                "92545014916748460506689181564842516689",
                "335627375761816351341327773846069799052",
                "217997837448314580348867727570467466864",
                "208157579910403290065071801618121141539",
                "257265186546262234873440531203658841283",
                "183268348372063425315287816805334730981",
                "108659695409281188759969866699814669928",
                "215849500187198486070308556252177599779"
            ]
        },
        "id": "CVE-2026-26986-b510b39a",
        "source": "https://github.com/freerdp/freerdp/commit/b4f0f0a18fe53aa8d47d062f91471f4e9c5e0d51",
        "signature_type": "Line"
    }
]