What’s Vulnerable › Vulnerabilities

CVE-2021-35053

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-11-03 · updated 2026-06-17

Description

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.

Affected products

• Kaspersky Endpoint Security for Windows: from 11.1.0 through 11.6.0

References

• https://support.kaspersky.com/general/vulnerability.aspx?el=12430#01112021
• https://www.zerodayinitiative.com/advisories/ZDI-21-1280/
• https://www.zerodayinitiative.com/advisories/ZDI-22-431/
• https://support.kaspersky.com/general/vulnerability.aspx?el=12430#01112021
• https://www.zerodayinitiative.com/advisories/ZDI-21-1280/
• https://www.zerodayinitiative.com/advisories/ZDI-22-431/

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