CVE-2026-26986

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

{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/26xxx/CVE-2026-26986.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-416"
    ]
}

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

Affected versions

1.*

1.0-beta1

1.0-beta2

1.0-beta3

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

3.10.0

3.10.1

3.10.2

3.10.3

3.11.0

3.11.1

3.12.0

3.13.0

3.14.0

3.14.1

3.15.0

3.16.0

3.17.0

3.17.1

3.17.2

3.18.0

3.19.0

3.19.1

3.2.0

3.20.0

3.20.1

3.20.2

3.21.0

3.22.0

3.3.0

3.4.0

3.5.0

3.5.1

3.6.0

3.6.1

3.6.2

3.6.3

3.7.0

3.9.0

Database specific

source

"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-26986.json"