CVE-2023-6873

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Published Dec 19, 2023 CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed

Description

Memory safety bugs present in Firefox 120. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 121.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Mozilla

Firefox

affected

Version	Status	Constraints
`unspecified`	affected	< 121

Configuration 1 [-]

cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*

Configuration 2 [-]

OR	cpe:2.3:o:debian:debian_linux:10.0:::::::*
	cpe:2.3:o:debian:debian_linux:11.0:::::::*
	cpe:2.3:o:debian:debian_linux:12.0:::::::*

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source	ID	Title
Debian DLA	DLA-3698-1	thunderbird security update
Debian DSA	DSA-5582-1	thunderbird security update
Ubuntu USN	USN-6562-1	Firefox vulnerabilities

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.853% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1855327%2C1862089%2C1862723
https://lists.debian.org/debian-lts-announce/2023/12/msg00021.html
https://security.gentoo.org/glsa/202401-10
https://www.debian.org/security/2023/dsa-5582
https://www.mozilla.org/security/advisories/mfsa2023-56/

History

No history.

Subscriptions

Debian Debian Linux

Mozilla Firefox

Weaknesses

CWE-787

Sources

CVE record Updated: Feb 13, 2025, 5:26 PM

Status: PUBLISHED
Assigner: mozilla
Published: Dec 19, 2023, 1:38 PM
Updated: Feb 13, 2025, 5:26 PM
Reserved: Dec 15, 2023, 5:42 PM

View source JSON

Vulnrichment No data

No data.

NVD Updated: Jun 17, 2026, 6:51 AM

Status: Modified
Published: Dec 19, 2023, 2:15 PM
Modified: Jun 17, 2026, 6:51 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

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