CVE-2023-43787

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

Ranks above 35.4% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

2023-10-10 12:26Z2 YR AGO

Last updated

2025-11-06 22:59Z10 MO AGO

Reserved

2023-09-22

Assigning CNA

redhat

Record state

PUBLISHED

Severity

High (CVSS 7.8)

CNA CVSS vector

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

Weaknesses

• CWE-122Heap-based Buffer OverflowVariant
• CWE-190Integer Overflow or WraparoundBase

Data version

5.2

Document digest

01504d6ba19d7bb036bc66af8e8e54fb98363a9fcb6f4b2a81ca3bee7650ef2f

• access.redhat.comRHSA-2024:2145https://access.redhat.com/errata/RHSA-2024:2145vendor-advisoryx_refsource_REDHAT
• access.redhat.comRHSA-2024:2973https://access.redhat.com/errata/RHSA-2024:2973vendor-advisoryx_refsource_REDHAT
• access.redhat.comhttps://access.redhat.com/security/cve/CVE-2023-43787vdb-entryx_refsource_REDHAT
• bugzilla.redhat.comRHBZ#2242254https://bugzilla.redhat.com/show_bug.cgi?id=2242254issue-trackingx_refsource_REDHAT
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2024/01/24/9
• jfrog.comhttps://jfrog.com/blog/xorg-libx11-vulns-cve-2023-43786-cve-2023-43787-part-two/
• security.netapp.comhttps://security.netapp.com/advisory/ntap-20231103-0006/
• lists.debian.orghttps://lists.debian.org/debian-lts-announce/2023/10/msg00005.html