8.8
CVE-2022-26485
- EPSS 4.45%
- Published 22.12.2022 20:15:22
- Last modified 06.03.2025 19:48:51
- Source security@mozilla.org
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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.
Data is provided by the National Vulnerability Database (NVD)
Mozilla ≫ Firefox ESR Version < 91.6.1
Mozilla ≫ Firefox Focus Version < 97.3.0
Mozilla ≫ Thunderbird Version < 91.6.2
07.03.2022: CISA Known Exploited Vulnerabilities (KEV) Catalog
Mozilla Firefox Use-After-Free Vulnerability
VulnerabilityMozilla Firefox contains a use-after-free vulnerability in XSLT parameter processing which can be exploited to perform arbitrary code execution.
DescriptionApply updates per vendor instructions.
Required actions| Type | Source | Score | Percentile |
|---|---|---|---|
| EPSS | FIRST.org | 4.45% | 0.886 |
| Source | Base Score | Exploit Score | Impact Score | Vector string |
|---|---|---|---|---|
| nvd@nist.gov | 8.8 | 2.8 | 5.9 |
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
|
| 134c704f-9b21-4f2e-91b3-4a467353bcc0 | 8.8 | 2.8 | 5.9 |
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
|
CWE-416 Use After Free
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.