CVE detail
CVE-2026-16389
Incorrect boundary conditions, integer overflow in the Libraries component in NSS. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
Buzz score
Why this CVE is surfacing
This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.
Buzz score components · mention 13.9 · diversity 10.0 · KEV 0.0 · OTX 0.0 · PoC 0.0
Why it matters now
Mention timeline
- Total mentions
- 3
- within the 30d window
- Peak daily
- 3
- highest bucket
Evidence
Source links by recency
3 source links · newest first
- https://www.mozilla.org/security/advisories/mfsa2026-71/www.mozilla.org
No excerpt available.
Vendor Advisorywww.mozilla.orgJul 21, 2026, 1:17 PM - https://www.mozilla.org/security/advisories/mfsa2026-68/www.mozilla.org
No excerpt available.
Vendor Advisorywww.mozilla.orgJul 21, 2026, 1:17 PM - https://bugzilla.mozilla.org/show_bug.cgi?id=2043887bugzilla.mozilla.org
No excerpt available.
Exploitbugzilla.mozilla.orgJul 21, 2026, 1:17 PM
Exploit code
Public exploit repository references
Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.
0 repository references · best confidence N/A · max 0 stars
Related records
Similar CVEs
6 related CVEs with shared weakness or product evidence
- CVE-2026-16402CVSS 9.8 · Critical
Integer overflow in the Graphics: ImageLib component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
- CVE-2026-16369CVSS 9.8 · Critical
Integer overflow in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
- CVE-2026-8956CVSS 9.8 · Critical
Integer overflow in the Networking: JAR component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
- CVE-2026-8949CVSS 7.5 · High
Integer overflow in the Widget: Win32 component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
- CVE-2026-6783CVSS 5.3 · Medium
Incorrect boundary conditions, integer overflow in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.
- CVE-2026-6773CVSS 7.5 · High
Denial-of-service due to integer overflow in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.