CVE-2025-4084

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 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

0.43% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 37.8% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-10-05.

Red Hat severity

Moderate. 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

2025-04-29 13:13Z1 YR AGO

Last updated

2026-04-13 14:27Z6 MO AGO

Reserved

2025-04-29

Assigning CNA

mozilla

Record state

PUBLISHED

Severity

Medium (CVSS 5.7)

CNA CVSS vector

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

Weaknesses

• CWE-116Improper Encoding or Escaping of OutputClass
• CWE-138Improper Neutralization of Special ElementsClass

Data version

5.2

Document digest

439bcc68ae7e61ffb178cbdb49dfe0396df3accebbeb20bb767c76b6214aeff0

• bugzilla.mozilla.orghttps://bugzilla.mozilla.org/buglist.cgi?bug_id=1949994%2C1956698%2C1960198
• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2025-29/
• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2025-30/
• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2025-32/
• lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/05/msg00022.html