CVE-2023-2855

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• 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

1.64% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 75.9% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

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

2023-05-26 00:00Z3 YR AGO

Last updated

2025-11-03 21:47Z11 MO AGO

Reserved

2023-05-24

Assigning CNA

GitLab

Record state

PUBLISHED

Severity

Medium (CVSS 5.3)

CNA CVSS vector

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

Weaknesses

• CWE-787Out-of-bounds WriteBase
• CWE-121Stack-based Buffer OverflowVariant

Data version

5.2

Document digest

7de8a82253cb4c9ff103594d659f61da8ac7f33004eca07cc8e9867583519bb3

• www.wireshark.orghttps://www.wireshark.org/security/wnpa-sec-2023-12.html
• gitlab.comhttps://gitlab.com/wireshark/wireshark/-/issues/19062
• gitlab.comhttps://gitlab.com/gitlab-org/cves/-/blob/master/2023/CVE-2023-2855.json
• www.debian.orgDSA-5429https://www.debian.org/security/2023/dsa-5429vendor-advisory
• security.gentoo.orgGLSA-202309-02https://security.gentoo.org/glsa/202309-02vendor-advisory
• lists.debian.orghttps://lists.debian.org/debian-lts-announce/2024/09/msg00049.html