CVE-2022-26485
HighActively exploited (CISA KEV)
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.
SeverityHigh
CVSS8.8
Exploit probability—
Product
Mozilla Firefox
PublishedDec 22, 2022
First seenDec 22, 2022
Added to KEVMar 7, 2022
Weakness typeCWE-416Use after free
How to fix
CISA required action
Apply updates per vendor instructions.
CISA due date: Mar 21, 2022Update
- mozilla firefox91.6.1, 97.0.2 or later
- mozilla firefox_focus97.3.0 or later
- mozilla firefox_mobile97.3.0 or later
- mozilla thunderbird91.6.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mozilla firefox | v < 91.6.1, v < 97.0.2 | 91.6.1, 97.0.2 |
| mozilla firefox_focus | v < 97.3.0 | 97.3.0 |
| mozilla firefox_mobile | v < 97.3.0 | 97.3.0 |
| mozilla thunderbird | v < 91.6.2 | 91.6.2 |
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