CVE-2026-16360

UNKNOWN 0.0

Memory safety bugs fixed in Firefox ESR 115.38, Firefox ESR 140.13 and Firefox 153

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

Memory safety bugs present in Firefox ESR 115.37, Firefox ESR 140.12 and Firefox 152. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, and Firefox ESR 140.13.

Vendor	mozilla
Product	firefox
Ecosystems	Browser JavaScript
Industries	Technology
Published	Jul 21, 2026

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Affected Versions

Mozilla / Firefox

All versions affected

References

NVD ↗ CVE.org ↗ EPSS Data ↗

bugzilla.mozilla.org: https://bugzilla.mozilla.org/buglist.cgi?bug_id=2022635%2C2028004%2C2035756%2C2045184%2C2045185%2C2045198%2C2045392%2C2045395%2C2045396%2C2045397%2C2045405%2C2045414%2C2045415%2C2045451%2C2045454%2C2045508%2C2045510%2C2045513%2C2045515%2C2045518%2C2045604%2C2045607%2C2045612%2C2045617%2C2045619%2C2045624%2C2045625%2C2045729%2C2045737%2C2045741%2C2045742%2C2045763%2C2045767%2C2045770%2C2045772%2C2045773%2C2045783%2C2045833%2C2045848%2C2045865%2C2045875%2C2045957%2C2047723%2C2047729%2C2048795%2C2048799%2C2048801%2C2049392%2C2049397%2C2049398%2C2049399%2C2049404%2C2049405%2C2049407%2C2049812%2C2050657%2C2050668%2C2050990%2C2053166%2C2053273%2C2053576%2C2053583%2C2053587 bugzilla.mozilla.org: https://bugzilla.mozilla.org/buglist.cgi?bug_id=2043739%2C2045281%2C2045614%2C2045744%2C2045775%2C2047719%2C2049805%2C2051666 mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-68/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-69/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-70/

Credits

Andrew McCreight, Jan de Mooij, Tom Ritter, Vincent Hilla and the Mozilla Fuzzing Team