VulnSocial

CVE-2026-12330Patch(mozilla / firefox)

LOWCVSS 5.4 · MEDIUM

Signal is active with 3 mentions in latest observed window

Immediate actions

  • Patch mozilla firefox systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

Incorrect boundary conditions in the Internationalization component. This vulnerability was fixed in Firefox ESR 140.12, Firefox ESR 115.37, and Thunderbird 140.12.

mozilla CVEsBack to dashboard
0.5/ 10 priority

Sources & remediation

Vendor / third-party advisories
Other references
Weakness type (CWE)
CWE-119

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • firefox
  • thunderbird

Threat summary

  • Patch or workaround signal is available
  • 3 mentions across 1 observed day

What's happening

  • Patch or workaround mentioned in 2 signals
  • Technical details provided in 3 signals
  • General: 1 classified signal
  • 3 total mentions across 1 day

Affected systems

Vendors
mozilla
Products
firefoxthunderbird

Deep dive

Activity timeline3 mentions / 1d
01223Mentions · 2026-06-16: 3Patch / Workaround · 2026-06-16: 2Technical Details · 2026-06-16: 306-16
Signal classification2 categories
Patch
266.7%
General
133.3%
Referenced assets4 URLs
Full discourse3 posts
  • Infoflowcloud@infoflowcloud
    Patch

    🚨*CVE* CVE-2026-12330 Incorrect boundary conditions in the Internationalization component. This vulnerability was fixed in Firefox ESR 140.12, Firefox ESR 115.37, and Thunderbird 140.12. https://www.cve.org/CVERecord?id=CVE-2026-12330 ----- Traducción: CVE-2026-12330 Condici… http://infoflow.cloud`

    Post summary

    The post announces that CVE-2026-12330, an internationalization boundary issue, has been patched in specified Firefox ESR and Thunderbird versions.

    0000027
    82 followersView on X
  • CVE@CVEnew
    Patch

    CVE-2026-12330 Incorrect boundary conditions in the Internationalization component. This vulnerability was fixed in Firefox ESR 140.12, Firefox ESR 115.37, and Thunderbird 140.12. https://www.cve.org/CVERecord?id=CVE-2026-12330

    Post summary

    The post announces CVE-2026-12330 and lists specific Firefox ESR and Thunderbird releases that have fixed the boundary condition flaw.

    00000256
    57.6K followersView on X
  • Vulmon Vulnerability Feed@VulmonFeeds
    General

    CVE-2026-12330 Incorrect Boundary Conditions in Firefox ESR Internationalization... https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-12330 Customizable Vulnerability Alerts: https://alerts.vulmon.com/?utm_source=twitter&utm_medium=social&utm_campaign=2102281&utm_content=4

    Post summary

    The tweet simply references CVE‑2026‑12330, provides a brief vulnerability description and links to a database page and alerts service, but offers no further technical, exploit, patch, or active‑exploitation details.

    0000036
    4.0K followersView on X
CPE platform detail2 entries

2 of 2 entries

PartVendorProductVersionTarget SWTarget HW
Appmozillafirefox---
Appmozillathunderbird---

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