Is CVE-2022-26485 in the CISA KEV catalog?

Yes. CVE-2022-26485 is on the CISA Known Exploited Vulnerabilities list, added 2022-03-07.

What is the CVSS severity of CVE-2022-26485?

CVE-2022-26485 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2022-26485?

CVE-2022-26485 has an EPSS score of 14.26% (96th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2022-26485

HIGHCISA KEVEPSS 96th pctl

8.8

CVSS v3

NVD

Description

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.

CWE-416Use After Free

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploit Intelligence

14.26%probability of exploitation in 30 days

96thpercentile

Very high risk: more likely to be exploited than 96% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

Mozilla Firefox Use-After-Free Vulnerability

Mozilla Firefox contains a use-after-free vulnerability in XSLT parameter processing which can be exploited to perform arbitrary code execution.

Apply updates per vendor instructions.

Remediation due: 2022-03-21

References

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-11-04.