Incorrect boundary conditions in the Web Audio component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.
CVE-2026-12292
HIGHPre-NVD 8.18.1—Trending — 3 sources updated this week
EchelonGraph scoreMEDIUM confidence
Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-06-16. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 8.1; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
8.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.1Exploit: NoneExposed: 0
A fix is available — apply it.
- CVSS v3
- 8.1
- EG Score
- 8.1(medium)
- EPSS
- 32.3%
- KEV
- Not listed
Published
June 16, 2026
Last Modified
July 15, 2026
Advisory Details (5)
Auto-updated Jun 18, 2026No patch confirmed yet.
generic
Security Vulnerabilities fixed in Thunderbird 140.12 — Mozilla
https://www.mozilla.org/security/advisories/mfsa2026-61/generic
Security Vulnerabilities fixed in Thunderbird 152 — Mozilla
https://www.mozilla.org/security/advisories/mfsa2026-60/generic
Security Vulnerabilities fixed in Firefox ESR 140.12 — Mozilla
https://www.mozilla.org/security/advisories/mfsa2026-58/generic
Security Vulnerabilities fixed in Firefox 152 — Mozilla
https://www.mozilla.org/security/advisories/mfsa2026-57/Vendor Advisories for CVE-2026-12292(20)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
- RHSA-2026:39428Red Hat Product SecurityHigh
Red Hat Security Advisory: thunderbird security update
- RHSA-2026:39142Red Hat Product SecurityHigh
Red Hat Security Advisory: thunderbird security update
- RHSA-2026:39141Red Hat Product SecurityHigh
Red Hat Security Advisory: thunderbird security update
- RHSA-2026:39011Red Hat Product SecurityHigh
Red Hat Security Advisory: firefox security update
- RHSA-2026:38750Red Hat Product SecurityHigh
Red Hat Security Advisory: thunderbird security update
- RHSA-2026:38753Red Hat Product SecurityHigh
Red Hat Security Advisory: thunderbird security update
- RHSA-2026:38751Red Hat Product SecurityHigh
Red Hat Security Advisory: thunderbird security update
- RHSA-2026:38506Red Hat Product SecurityHigh
Red Hat Security Advisory: firefox security update
- +12 more
Patch Availability(21)
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Additional Vendor Advisories
(1)
Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.
Frequently asked(5)
What is CVE-2026-12292?
CVE-2026-12292 is a high vulnerability published on June 16, 2026. Incorrect boundary conditions in the Web Audio component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.
When was CVE-2026-12292 disclosed?
CVE-2026-12292 was first published in the National Vulnerability Database on June 16, 2026, with the most recent update on July 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-12292 actively exploited?
CVE-2026-12292 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 32.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-12292?
CVE-2026-12292 has a CVSS v3.1 base score of 8.1 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-12292?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-12292, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-12292
Is Your Infrastructure Affected by CVE-2026-12292?
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