Is CVE-2022-29917 actively exploited?

No active exploitation of CVE-2022-29917 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2022-29917 be exploited remotely?

Yes. CVE-2022-29917 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2022-29917?

CVE-2022-29917 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2022-29917

CRITICAL

CVE-2022-29917

CWE-787Published: December 22, 2022· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

Mozilla developers Andrew McCreight, Gabriele Svelto, Tom Ritter and the Mozilla Fuzzing Team reported memory safety bugs present in Firefox 99 and Firefox ESR 91.8. 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 affects Thunderbird < 91.9, Firefox ESR < 91.9, and Firefox < 100.

NVD Source

Risk Analysis

Multiple memory safety bugs were identified that could lead to memory corruption and potential arbitrary code execution. The critical severity rating underscores the danger of these flaws if successfully leveraged by an attacker.

No public exploit is known, and the vulnerability is not in the KEV catalog. It is remotely exploitable.

Recommended Action

Update to Firefox 100, Firefox ESR 91.9, or Thunderbird 91.9 to resolve these memory safety vulnerabilities.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2022-29917 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.