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7.4High

CVE-2026-66141

Exim Exim Published: (3 months ago)

Description

Exim before 4.99.5 allows .forward privilege escalation because force_command for a pipe transport is mishandled.

Weakness (CWE): CWE-829

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

VendorProductVersions
Exim Exim 4.82 – < 4.99.5

References and patches

CPE matches (NVD) (1)
  • cpe:2.3:a:exim:exim:*:*:*:*:*:*:*:* < 4.99.5

Recent CVEs in the same product — Exim

4.0Medium
CVE-2026-94057
Exim Exim

Exim before 4.100.1 allows SMTP smuggling in which the received message does not match any sent message, and instead depends on crafted data sent after a rejection during DATA processing.

7.5High
CVE-2026-94056
Exim Exim

Exim before 4.100.1, when Proxy-Protocol is used with an attacker-controlled proxy, allows attackers to read certain uninitialized data from stack memory.

3.7Low
CVE-2026-94055
Exim Exim

Exim before 4.100.1, when certain non-default TLS settings are used with GnuTLS, has a use-after-free.

7.0High
CVE-2026-94054
Exim Exim

Exim before 4.100.1, when Proxy-Protocol is used with an attacker-controlled proxy, has an out-of-bounds write.

8.4High
CVE-2026-66140
Exim Exim

Exim before 4.99.5 allows directory traversal to access files outside of the spool area, and consequently gain privileges, because arguments related to queue-name are mishandled.

5.3Medium
CVE-2026-48840
Exim Exim

Exim 4.88 before 4.99.4, in some proxy configurations, mishandles certain short payloads, leading to disclosure of uninitialized stack memory values to a client.