CVE-2021-35053 json
Possible system denial of service in case of arbitrary changing Firefox browser parameters.
published 2021-11-03 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-21698
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.6%
- EPSS 2.6% chance of exploitation in 30 days, percentile 85%
- public exploits
- 0
- none known
Summary
Possible system denial of service in case of arbitrary changing Firefox browser parameters. An attacker could change specific Firefox browser parameters file in a certain way and then reboot the system to make the system unbootable.
Exploit prediction
2.60% chance of exploitation in the next 30 days, higher than 85% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 7.8 | AV:N/AC:L/Au:N/C:N/I:N/A:C |
Affected products
- n/a Kaspersky Endpoint Security for Windows
References
-
support.kaspersky.com
/general/vulnerability.aspx?el=12430#01112021
broken-link
-
zerodayinitiative.com
/advisories/ZDI-21-1280/
third-party-advisory, vdb-entry
-
zerodayinitiative.com
/advisories/ZDI-22-431/
third-party-advisory, vdb-entry
Sources
- CVE List CVE-2021-35053
- NVD CVE-2021-35053
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.