CVE-2025-1016

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.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited 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

0.59% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 45.9% 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

2025-02-04 13:58Z1 YR AGO

Last updated

2026-04-13 14:25Z4 MO AGO

Reserved

2025-02-04

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-787Out-of-bounds WriteBase
• CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')Base

Data version

5.2

Document digest

906794b4746ee6f2079a31d2a5710ed69b3a320bedae8f04714aa6e49a23559d

• bugzilla.mozilla.orgMemory safety bugs fixed in Firefox 135, Thunderbird 135, Firefox ESR 115.20, Firefox ESR 128.7, Thunderbird 115.20, and Thunderbird 128.7https://bugzilla.mozilla.org/buglist.cgi?bug_id=1936601%2C1936844%2C1937694%2C1938469%2C1939583%2C1940994
• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2025-07/
• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2025-08/
• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2025-09/
• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2025-10/
• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2025-11/
• lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/02/msg00006.html