CVE-2026-16353: Vulnerability in Mozilla Firefox
Invalid pointer in the DOM: Bindings (WebIDL) component. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
AI Analysis
Technical Summary
CVE-2026-16353 is a memory safety vulnerability caused by an invalid pointer in the DOM Bindings (WebIDL) component of Firefox. This flaw was addressed and fixed in Firefox 153, Firefox ESR 115.38, and Firefox ESR 140.13. The Mozilla advisory classifies the impact as high and notes that the bug showed evidence of memory corruption, which could be exploited to run arbitrary code with sufficient effort. There are no confirmed reports of exploitation in the wild. The fix is included in the stated Firefox releases.
Potential Impact
The vulnerability involves memory corruption due to an invalid pointer in the DOM Bindings component, which could potentially allow an attacker to execute arbitrary code or cause a crash. The impact is rated high by Mozilla. However, there are no known active exploits in the wild at this time.
Mitigation Recommendations
A fix is available and has been officially released by Mozilla. Users should update to Firefox 153, Firefox ESR 115.38, or Firefox ESR 140.13 or later to remediate this vulnerability. No additional mitigation steps are required beyond applying the official update.
CVE-2026-16353: Vulnerability in Mozilla Firefox
Description
Invalid pointer in the DOM: Bindings (WebIDL) component. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
CVSS v3.1
Score 9.8critical
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-16353 is a memory safety vulnerability caused by an invalid pointer in the DOM Bindings (WebIDL) component of Firefox. This flaw was addressed and fixed in Firefox 153, Firefox ESR 115.38, and Firefox ESR 140.13. The Mozilla advisory classifies the impact as high and notes that the bug showed evidence of memory corruption, which could be exploited to run arbitrary code with sufficient effort. There are no confirmed reports of exploitation in the wild. The fix is included in the stated Firefox releases.
Potential Impact
The vulnerability involves memory corruption due to an invalid pointer in the DOM Bindings component, which could potentially allow an attacker to execute arbitrary code or cause a crash. The impact is rated high by Mozilla. However, there are no known active exploits in the wild at this time.
Mitigation Recommendations
A fix is available and has been officially released by Mozilla. Users should update to Firefox 153, Firefox ESR 115.38, or Firefox ESR 140.13 or later to remediate this vulnerability. No additional mitigation steps are required beyond applying the official update.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-xj6v-33q6-wvxj
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-16353"]
- Ecosystems
- []
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a5fd15c1010f89cc21ca168
Added to database: 07/21/2026, 20:06:52 UTC
Last enriched: 07/22/2026, 16:59:01 UTC
Last updated: 09/03/2026, 05:36:01 UTC
Views: 67
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