CVE-2026-40687
MEDIUM
4,8
Source: [email protected]
Attack Vector: network
Attack Complexity: high
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: low
Integrity: none
Availability: low
Description
AI Translation Available
In Exim before 4.99.2, when the SPA authentication driver is used with an adversarial SPA resource, there can be an out-of-bounds write that crashes the connection instance, or erroneous data processing that divulges data from uninitialized heap memory.
EPSS (Exploit Prediction Scoring System)
Trend Analysis
EPSS (Exploit Prediction Scoring System)
Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.
EPSS Score
0,0007
Percentile
0,2th
Updated
Single Data Point
Only one EPSS measurement is available for this CVE. Trend analysis requires multiple data points over time.
909
Missing Initialization of Resource
IncompleteCommon Consequences
Security Scopes Affected:
Confidentiality
Availability
Potential Impacts:
Read Memory
Read Application Data
Dos: Crash, Exit, Or Restart
Applicable Platforms
All platforms may be affected
Application
Exim by Exim
Version Range Affected
To
4.99.2
(exclusive)
CPE Identifier
View Detailed Analysis
cpe:2.3:a:exim:exim:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
https://code.exim.org/exim/exim/commit/68b963b9f75ca27b38e1c0f8c87037990199f505
https://exim.org/static/doc/security/cve-2026-04.1/CVE2026-40687.assessment
https://exim.org/static/doc/security/CVE-2026-40687.txt
https://www.openwall.com/lists/oss-security/2026/04/30/21