CVE-2021-23970

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Published Feb 26, 2021 CVSS 3.1 · 6.5 Medium EPSS 1.0% KEV · Not listed

Description

Context-specific code was included in a shared jump table; resulting in assertions being triggered in multithreaded wasm code. This vulnerability affects Firefox < 86.

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
`< 86`	affected	—

Configuration 1 [-]

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

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
EUVD	EUVD-2021-10891	Context-specific code was included in a shared jump table; resulting in assertions being triggered in multithreaded wasm code. This vulnerability affects Firefox < 86.
Ubuntu USN	USN-4756-1	Firefox vulnerabilities

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction Required

No CVSS v3.0

Access Vector Network

Access Complexity Medium

Authentication None

Confidentiality Impact None

Integrity Impact None

Availability Impact Partial

This CVE is not in the KEV list.

Exploit prediction score: 1.0% (1.007% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
https://bugzilla.mozilla.org/show_bug.cgi?id=1681724
https://security.gentoo.org/glsa/202104-10
https://www.mozilla.org/security/advisories/mfsa2021-07/

History

No history.

Subscriptions

Mozilla Firefox

Weaknesses

CWE-617

Sources

CVE record Updated: Aug 3, 2024, 7:14 PM

Status: PUBLISHED
Assigner: mozilla
Published: Feb 26, 2021, 1:57 AM
Updated: Aug 3, 2024, 7:14 PM
Reserved: Jan 13, 2021, 12:00 AM

View source JSON

Vulnrichment No data

No data.

NVD Updated: Jun 17, 2026, 3:39 AM

Status: Modified
Published: Feb 26, 2021, 2:15 AM
Modified: Jun 17, 2026, 3:39 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

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