Known exploited vulnerability
CVE-2022-26485
The short answer
CVE-2022-26485 affects Mozilla Firefox and is rated high (CVSS 8.8). CISA added it to the Known Exploited Vulnerabilities catalog on 2022-03-07: attackers are using it, so patch it first.
What it is
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.
Weakness: CWE-416.
Severity
8.8 high
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Exploited (CISA KEV)
Yes, since Mar 7, 2022
Federal due date Mar 21, 2022
EPSS, next 30 days
14%
Higher than 97% of scored CVEs
How it can be exploited
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
What CISA says to do
Apply updates per vendor instructions.
Affected products
Firefox, Firefox ESR, Firefox for Android, Thunderbird, Focus. NVD's record lists the exact affected versions.
References
- bugzilla.mozilla.org/show_bug.cgi?id=1758062 ExploitIssue TrackingVendor Advisory
- www.mozilla.org/security/advisories/mfsa2022-09/ Vendor Advisory
- bugzilla.mozilla.org/show_bug.cgi?id=1758062 ExploitIssue TrackingVendor Advisory
- www.mozilla.org/security/advisories/mfsa2022-09/ Vendor Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-26485 US Government Resource
Questions
Is CVE-2022-26485 being exploited?
Yes. CISA added CVE-2022-26485 to its Known Exploited Vulnerabilities catalog on 2022-03-07, with a federal remediation due date of 2022-03-21.
How do I fix CVE-2022-26485?
CISA's required action: Apply updates per vendor instructions.
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.
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