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VulnerabilityPublished Updated

CVE-2024-11697: Mozilla Firefox · Improper Keypress Handling in Executable File Confirmation Dialog

Affects Mozilla FirefoxSource CVE Database V5

0

Not known to be exploited · CVSS 8.8 High : upgrade to 133 or 128.5 soon.

Data as of 26 Oct 2026, 09:15 UTC

CVSS 3.1 base score
8.8High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.7% chance of exploitation in 30 days – higher than 55% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 133, 128.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 26 Nov 2024

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Upgrade Mozilla Firefox to 133 or 128.5.

Affected software

ProductAffectedFixed in
Mozilla FirefoxAffected
  • <133
  • <128.5
Fixed in
  • 133
  • 128.5

AI-suggested

1. 2. If you cannot patch yet, restrict the execution of downloaded executable files via endpoint protection policies and application whitelisting to prevent unauthorized code execution. 3. Educate users about the risks of opening executable files and the importance of verifying download sources, especially in the context of phishing attempts. 4. Implement network-level protections such as email filtering and web proxy controls to block or flag suspicious executable downloads. 5. Monitor endpoint logs for unusual process creation events related to executable files launched from browsers or email clients. 6. Employ multi-factor authentication and least privilege principles to limit the impact if an exploit occurs. 7. Coordinate with IT security teams to prioritize vulnerability management and incident response readiness for this threat.

Description

When handling keypress events, an attacker may have been able to trick a user into bypassing the "Open Executable File?" confirmation dialog. This could have led to malicious code execution. This vulnerability affects Firefox < 133, Firefox ESR < 128.5, Thunderbird < 133, and Thunderbird < 128.5.

References

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