CVE-2023-42119

Exim dnsdb Out-Of-Bounds Read Information Disclosure Vulnerability

LOW
3.1
CVSS Score
Published: May 3, 2024 at 02:13 AM UTC
Updated: June 17, 2026 at 06:23 AM UTC
1 product affected across 1 vendorExim

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Severity
LOW3.1
Exploit prediction
EPSS 2%
SSVC
No known exploit

Description

Exim dnsdb Out-Of-Bounds Read Information Disclosure Vulnerability. This vulnerability allows network-adjacent attackers to disclose sensitive information on affected installations of Exim. Authentication is not required to exploit this vulnerability. The specific flaw exists within the smtp service, which listens on TCP port 25 by default. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the service account. . Was ZDI-CAN-17643.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Affected range stops below 4.96.2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (2)

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

3.1LOWzdi
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-125

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