SARA / Free Tools / CVE / CVE-2022-26485

CVE-2022-26485 — Mozilla Firefox Use-After-Free Vulnerability

Removing an XSLT parameter during processing could have lead to an exploitable use-after-free. We have had reports of attacks in the wild abusing this flaw. This vulnerability affects Firefox < 97.0.2, Firefox ESR < 91.6.1, Firefox for Android < 97.3.0, Thunderbird <

CVSS
— —
EPSS
5.76% (top 9.60%)
CWE
—
Published
2022-12-22T00:00:00.000Z
Last modified
2025-10-21T23:15:29.432Z
CVSS vector
—
CISA KEV — Actively Exploited
Added to KEV
2022-03-07
BOD 22-01 due
2022-03-21
Ransomware use
Unknown
View KEV detail
CVE-2022-26485 on CISA KEV →

01What is this vulnerability?

Removing an XSLT parameter during processing could have lead to an exploitable use-after-free. We have had reports of attacks in the wild abusing this flaw. This vulnerability affects Firefox < 97.0.2, Firefox ESR < 91.6.1, Firefox for Android < 97.3.0, Thunderbird < 91.6.2, and Focus < 97.3.0.

02Affected products

VendorProductVersions
MozillaFirefoxunspecified
MozillaFirefox ESRunspecified
MozillaFirefox for Androidunspecified
MozillaThunderbirdunspecified
MozillaFocusunspecified

03Active exploitation status

Yes — actively exploited. Added to the CISA KEV catalog on 2022-03-07. Ransomware use: Unknown.

04Recommended remediation

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

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07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

09References

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