NULL pointer dereference in Mozilla Firefox
CVE-2022-42928
Certain types of allocations were missing annotations that, if the Garbage Collector was in a specific state, could have lead to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 106, Firefox ESR < 102.4, and Thunderbird < 102.4.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.008 (55.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 55.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
- Mozilla Firefox — versions unspecified
- Mozilla Firefox Esr — versions unspecified
- Mozilla Firefox Esr
- Mozilla Thunderbird — versions unspecified
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugzilla.mozilla.org/show_bug.cgi (Permissions Required, Issue Tracking)
- www.mozilla.org/security/advisories/mfsa2022-44/ (Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2022-45/ (Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2022-46/ (Vendor Advisory)
Frequently asked questions
- What is CVE-2022-42928?
- CVE-2022-42928 is a high-severity vulnerability in Mozilla Firefox, classified under NULL Pointer Dereference. CVSS score: 8.8/10. Published 2022-12-22.
- How severe is CVE-2022-42928?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2022-42928 known to be exploited?
- 7 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.