dbcve.org
FirefoxWeb browser · Mozilla

CVE-2024-11691

HIGH · 8.8 CVSS v3.1 Published 2024-11-26
Fix available
A fix is available. Upgrade to 115.18.0 / 128.5.0 or later.
See remediation →
95/100
Remediation priority · Urgent
Remotely reachable No privileges

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Certain WebGL operations on Apple silicon M series devices could have lead to an out-of-bounds write and memory corruption due to a flaw in Apple's GPU driver. *This bug only affected the application on Apple M series hardware. Other platforms were unaffected.* This vulnerability affects Firefox < 133, Firefox ESR < 128.5, Firefox ESR < 115.18, Thunderbird < 133, Thunderbird < 128.5, and Thunderbird < 115.18.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

A vulnerability in Apple's GPU driver allows certain WebGL operations on M series Apple Silicon devices to trigger an out-of-bounds write, leading to memory corruption. This affects Firefox and Thunderbird when running on affected Apple hardware.

MitigationUpdate Firefox to version 133 or later, and Thunderbird to version 133 or later (or respective ESR versions 128.5+/115.18+). This is a client-side browser vulnerability specific to Apple M series hardware.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
FirefoxWeb browser
Affected:< 115.18.0>= 116.0, < 128.5.0>= 129.0, < 133.0
ThunderbirdApplication
Affected:< 115.18.0>= 116.0, < 128.5.0>= 129.0, < 133.0

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Verify Apple Silicon hardware
    Run 'sysctl machdep.cpu.brand_string' in Terminal and confirm the output contains 'Apple' (e.g., Apple M1, M2, M3). This vulnerability only affects M series Apple Silicon chips, not Intel Macs.
    Affected if The system is not running an Apple M series processor (M1/M2/M3).
  2. Check Firefox version
    Run 'firefox --version' or navigate to Firefox > About Firefox. Compare the version number against the affected ranges: < 115.18.0, >= 116.0 and < 128.5.0, or >= 129.0 and < 133.0.
    Affected if Firefox version falls within any of the affected ranges listed.
  3. Check Thunderbird version
    Run 'thunderbird --version' or navigate to Thunderbird > About Thunderbird. Compare the version number against the affected ranges: < 115.18.0, >= 116.0 and < 128.5.0, or >= 129.0 and < 133.0.
    Affected if Thunderbird version falls within any of the affected ranges listed.

You are affected if you are running Firefox or Thunderbird on an Apple M series Mac and the application version matches any of the vulnerable version ranges.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 115.18.0 / 128.5.0 / 133.0 or later
Fixed in 115.18.0128.5.0133.0
Interim mitigation

Update Firefox to version 133 or later, and Thunderbird to version 133 or later (or respective ESR versions 128.5+/115.18+). This is a client-side browser vulnerability specific to Apple M series hardware.

Recommended fix High confidence

Firefox/Thunderbird 133.0 (or Firefox/Thunderbird ESR 128.5.0, or Firefox/Thunderbird ESR 115.18.0 depending on current branch)

  1. Check current Firefox/Thunderbird version: Go to Menu > Help > About Firefox/Thunderbird
  2. If version is < 115.18.0, download and install Firefox/Thunderbird 115.18.0 or later from mozilla.org
  3. If version is >= 116.0 and < 128.5.0, download and install Firefox/Thunderbird ESR 128.5.0 or later from mozilla.org
  4. If version is >= 129.0 and < 133.0, download and install Firefox/Thunderbird 133.0 or later from mozilla.org
  5. Restart the application after update
  6. Note: This vulnerability only affects Apple M series (M1/M2/M3) hardware. Other platforms are unaffected.
Caveat Minimal risk - standard version update; ensure backups of bookmarks and settings before updating

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Firefox Scoped from the published advisory
  • Consultation2.0 h
  • Implementation1.0 h
  • Testing2.0 h
  • Review / QA1.0 h
6.0 hours of engineering $1,060
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,696.

Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2024-11691 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.

Get it on GitHub Scan in the browser

References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2024-11691 in production — separate from our analysis above.

No notes yet

Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.

What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data