tmux image.c image_free use after free_CVE-2026-11623

2 / 10

LOW

CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

Description

A security vulnerability has been detected in tmux up to 3.6a. Affected is the function image_free of the file image.c. Such manipulation leads to use after free. Local access is required to approach this attack. This attack is characterized by high complexity. The exploitability is told to be difficult. The exploit has been disclosed publicly and may be used. Upgrading to version 3.7-rc is able to address this issue. The name of the patch is fc6d94a9f8a593bd8b7031650802084385d4ee03. The affected component should be upgraded.

Basic Information

ID CVE-2026-11623

Source VulDB

Published Jun 9, 2026 at 03:15

Affected Product

Vendor n/a

Product tmux

Version 3.6a

Affected Versions n/a tmux 3.6a

CWE Classification

CWE-416 CWE-119

References

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    "lastseen": "",
    "description": "A security vulnerability has been detected in tmux up to 3.6a. Affected is the function image_free of the file image.c. Such manipulation leads to use after free. Local access is required to approach this attack. This attack is characterized by high complexity. The exploitability is told to be difficult. The exploit has been disclosed publicly and may be used. Upgrading to version 3.7-rc is able to address this issue. The name of the patch is fc6d94a9f8a593bd8b7031650802084385d4ee03. The affected component should be upgraded.",
    "published": "2026-06-09T03:15:12.467Z",
    "modified": "2026-06-09T03:15:12.467Z",
    "type": "cve",
    "title": "tmux image.c image_free use after free",
    "source": "VulDB",
    "references": "https://vuldb.com/vuln/369303\nhttps://vuldb.com/vuln/369303/cti\nhttps://vuldb.com/cve/CVE-2026-11623\nhttps://vuldb.com/submit/835623\nhttps://gist.github.com/XlabAITeam/f0d9952595f795129a3258ba73bbc3cb\nhttps://github.com/tmux/tmux/commit/fc6d94a9f8a593bd8b7031650802084385d4ee03\nhttps://github.com/tmux/tmux/releases/tag/3.7-rc\nhttps://github.com/tmux/tmux/",
    "id": "CVE-2026-11623",
    "bulletinFamily": "",
    "cwe": [
        "CWE-416",
        "CWE-119"
    ],
    "cvelist": null,
    "sourceData": "n/a tmux 3.6a",
    "sourceHref": "",
    "cvss": {
        "score": 2,
        "severity": "LOW",
        "vector": "CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P",
        "version": "4.0"
    },
    "cvss2": [],
    "cvss3": {
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        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
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        "privilegesRequired": "",
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        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
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        }
    },
    "href": "",
    "category_name": "CVE",
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    "product": "tmux",
    "version": "3.6a",
    "vendor": "n/a",
    "ai_description": "",
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    "ai_score": 0
}