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Critical 9.8Published Jul 21, 2026
CVE-2026-16356Sandbox escape due to use-after-free in the Disability Access APIs component.
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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Sandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
- CVSS
- 9.8 CRITICAL (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-416, CWE-693
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Jul 24, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
mozilla firefox mozilla:firefox | before 115.38.0; before 153.0.0; from 128.1.0 before 140.13.0 | NVD |
mozilla thunderbird mozilla:thunderbird | before 140.13.0; from 141.0 before 153.0 | NVD |
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=2052562permissions-required
- https://www.mozilla.org/security/advisories/mfsa2026-68/vendor-advisory
- https://www.mozilla.org/security/advisories/mfsa2026-69/vendor-advisory
- https://www.mozilla.org/security/advisories/mfsa2026-70/vendor-advisory
- https://www.mozilla.org/security/advisories/mfsa2026-71/vendor-advisory
- https://www.mozilla.org/security/advisories/mfsa2026-72/vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.