What is CVE-2023-42115?

CVE-2023-42115 is a critical-severity vulnerability in Exim, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2024-05-03.

How severe is CVE-2023-42115?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2023-42115 known to be exploited?

9 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Exim

CVE-2023-42115

Exim AUTH Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Exim. Authentication is not required to exploit this vulnerability. The…

Vulnerability class: Buffer Overflow

EPSS: 0.658 (98.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Exim — versions exim 4.95

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

Public proof-of-concept exploits

References

ZDI-23-1469 (x_research-advisory)

Frequently asked questions

What is CVE-2023-42115?: CVE-2023-42115 is a critical-severity vulnerability in Exim, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2024-05-03.
How severe is CVE-2023-42115?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2023-42115 known to be exploited?: 9 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.