CVE-2024-9401

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.74% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 51.9% of scored records. A rank, not a probability.

NVD base score

9.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2024-10-01 15:13Z1 YR AGO

Last updated

2025-11-03 22:33Z10 MO AGO

Reserved

2024-10-01

Assigning CNA

mozilla

Record state

PUBLISHED

Severity

Critical (CVSS 9.8)

CNA CVSS vector

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

Weaknesses

• CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferClass
• CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')Base

Data version

5.2

Document digest

a8d875efb3290876a30c63ee5503d24d90b403b3e7d595295720829ba2bd5a6b

• bugzilla.mozilla.orgMemory safety bugs fixed in Firefox 131, Firefox ESR 115.16, Firefox ESR 128.3, Thunderbird 131, and Thunderbird 128.3https://bugzilla.mozilla.org/buglist.cgi?bug_id=1872744%2C1897792%2C1911317%2C1916476
• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2024-46/
• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2024-47/
• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2024-48/
• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2024-49/
• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2024-50/
• lists.debian.orghttps://lists.debian.org/debian-lts-announce/2024/10/msg00006.html