ByteOS Network

NVD Vulnerability Details :

CVE-2025-67896

Analyzed

Source-cve@mitre.org

Published At-14 Dec, 2025 | 04:15

Updated At-22 Dec, 2025 | 19:15

Exim before 4.99.1, with certain non-default rate-limit configurations, allows a remote heap-based buffer overflow because database records are cast directly to internal structures without validation.

Date Added	Due Date	Vulnerability Name	Required Action
	N/A

Metrics

Type	Version	Base score	Base severity	Vector
Secondary	3.1	7.0	HIGH	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:L
Primary	3.1	9.8	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Type: Secondary

Version: 3.1

Base score: 7.0

Base severity: HIGH

Vector:

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

Type: Primary

Version: 3.1

Base score: 9.8

Base severity: CRITICAL

Vector:

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

CPE Matches

Exim

>>exim>>Versions before 4.99.1(exclusive)

cpe:2.3:a:exim:exim:*:*:*:*:*:*:*:*

Weaknesses

CWE ID	Type	Source
CWE-122	Secondary	cve@mitre.org

CWE ID: CWE-122

Type: Secondary

Source: cve@mitre.org

References

Hyperlink	Source	Resource
https://exim.org/static/doc/security/	cve@mitre.org	Vendor Advisory
https://exim.org/static/doc/security/EXIM-Security-2025-12-09.1/report.txt	cve@mitre.org	Vendor Advisory
https://www.openwall.com/lists/oss-security/2025/12/11/2	cve@mitre.org	Mailing List
http://www.openwall.com/lists/oss-security/2025/12/14/1	af854a3a-2127-422b-91ae-364da2661108	Mailing List
http://www.openwall.com/lists/oss-security/2025/12/18/3	af854a3a-2127-422b-91ae-364da2661108	Mailing List