CVE-2025-5266

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

0.33% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 25.1% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

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

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

2025-05-27 12:29Z1 YR AGO

Last updated

2026-04-13 14:29Z4 MO AGO

Reserved

2025-05-27

Assigning CNA

mozilla

Record state

PUBLISHED

Severity

Medium (CVSS 4.3)

CNA CVSS vector

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

Weaknesses

• CWE-200Exposure of Sensitive Information to an Unauthorized ActorClass
• CWE-829Inclusion of Functionality from Untrusted Control SphereBase

Data version

5.2

Document digest

07c20ea30cac7cda8335ac57a08a135bb9a1768aa3133324b5f63df369ce057c

• bugzilla.mozilla.orghttps://bugzilla.mozilla.org/show_bug.cgi?id=1965628
• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2025-42/
• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2025-44/
• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2025-45/
• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2025-46/
• lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/05/msg00046.html
• lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/05/msg00043.html