CVE-2022-28281 Public exploit High · 8.8 EPSS 2.8%
If a compromised content process sent an unexpected number of WebAuthN Extensions in a Register command to the parent…
Mozilla · Thunderbird
Official description · CVE.org
If a compromised content process sent an unexpected number of WebAuthN Extensions in a Register command to the parent process, an out of bounds write would have occurred leading to memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 91.8, Firefox < 99, and Firefox ESR < 91.8.
Priority scorePatchfirst’s 0 to 100 ranking. It adds points for CISA KEV listing, ransomware use, EPSS, threat reports, public exploit code and CVSS. Every CVE page shows the breakdown. Breakdown
65.0 / 100
- Exploited
- Yes, in VulnCheck KEV
- Reports
- 0
- Tactics
- 0/15
Exploitation timelineDated milestones for a CVE: when it was disclosed, when exploit code became public, when exploitation was confirmed, and when threat reports named it.
First seen exploited 4 months before it was disclosed. Public exploit code (PoC-in-GitHub) was available 8 months before disclosure.
- Public exploit codePoC-in-GitHub8 mo before
- First seen exploitedVulnCheck KEV evidence4 mo before
- Disclosedday 0
MITRE ATT&CKA public catalogue of the techniques attackers use, maintained by MITRE. Patchfirst uses it to describe what attackers do with a vulnerability. techniques
No techniques linkedNo ATT&CK techniques are linked to this CVE yet. MITRE CTID has not mapped it, and no report passage in the corpus ties it to a technique.
What security researchers reported
Not named in any threat report yetAlso mentioned in 4 community threat pulses (AlienVault OTX)
Weaker evidencePulses are indicator collections that anyone can publish. A mention is not confirmation of exploitation.
- ACTUALIZACION | Actualización de seguridad para MozillaFirefox | SUSE11 Apr 2022
- ACTUALIZACION | Security Vulnerabilities fixed in Firefox 99 — Mozilla10 Apr 2022
- USN-5370-1: Firefox vulnerabilities | Ubuntu security notices | Ubuntu10 Apr 2022
- Red Hat Customer Portal - Access to 24x7 support and knowledge9 Apr 2022