What’s Vulnerable › Vulnerabilities

CVE-2020-6796

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-03-02 · updated 2026-06-17
• Weakness: CWE-787

Description

A content process could have modified shared memory relating to crash reporting information, crash itself, and cause an out-of-bound write. This could have caused memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 73 and Firefox < ESR68.5.

Affected products

• Mozilla Firefox: before 73.0 — fixed in 73.0
• Mozilla Firefox ESR: before 68.5.0 — fixed in 68.5.0

How to fix

Upgrade to a fixed version: Mozilla Firefox 73.0; Mozilla Firefox ESR 68.5.0. Check the vendor advisory for mitigations.

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=1610426
• https://security.gentoo.org/glsa/202003-02
• https://usn.ubuntu.com/4278-2/
• https://www.mozilla.org/security/advisories/mfsa2020-05/
• https://www.mozilla.org/security/advisories/mfsa2020-06/
• https://bugzilla.mozilla.org/show_bug.cgi?id=1610426
• https://security.gentoo.org/glsa/202003-02
• https://usn.ubuntu.com/4278-2/
• https://www.mozilla.org/security/advisories/mfsa2020-05/
• https://www.mozilla.org/security/advisories/mfsa2020-06/

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