CVE-2023-4055

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 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

0.73% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 51.6% of scored records. A rank, not a probability.

NVD base score

7.5 (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:N/I:H/A:N

NVD analysis status

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

Red Hat severity

Low. 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

2023-08-01 15:01Z3 YR AGO

Last updated

2025-02-13 17:08Z1 YR AGO

Reserved

2023-08-01

Assigning CNA

mozilla

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')Base
• CWE-784Reliance on Cookies without Validation and Integrity Checking in a Security DecisionVariant

Data version

5.1

Document digest

ddda59b65d120eea4b22575bd0e532287fc06f84fe6e0d1762d4aba8373d548b

• bugzilla.mozilla.orghttps://bugzilla.mozilla.org/show_bug.cgi?id=1782561
• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2023-29/
• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2023-30/
• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2023-31/
• www.debian.orghttps://www.debian.org/security/2023/dsa-5464
• www.debian.orghttps://www.debian.org/security/2023/dsa-5469
• lists.debian.orghttps://lists.debian.org/debian-lts-announce/2023/08/msg00008.html
• lists.debian.orghttps://lists.debian.org/debian-lts-announce/2023/08/msg00010.html