CVE-2025-8034

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

0.39% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 31.9% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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

2025-07-22 20:49Z1 YR AGO

Last updated

2026-04-13 14:27Z4 MO AGO

Reserved

2025-07-22

Assigning CNA

mozilla

Record state

PUBLISHED

Severity

High (CVSS 8.8)

CNA CVSS vector

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

Weaknesses

• CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferClass

Data version

5.2

Document digest

2e6d8a48369429ae5d3018de687196a2f26595d52e6d55dbb270139a26c30e25

• bugzilla.mozilla.orgMemory safety bugs fixed in Firefox ESR 115.26, Firefox ESR 128.13, Thunderbird ESR 128.13, Firefox ESR 140.1, Thunderbird ESR 140.1, Firefox 141 and Thunderbird 141https://bugzilla.mozilla.org/show_bug.cgi?id=1970422
• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2025-56/
• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2025-57/
• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2025-58/
• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2025-59/
• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2025-61/
• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2025-62/
• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2025-63/
• lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/07/msg00016.html