Exim is a message transfer agent (MTA) originally developed at the University of Cambridge for use on Unix systems connected to the Internet. It is freely available under the terms of the GNU General Public Licence.
- Website
- https://www.exim.org
- Vendor name
- exim
- GNA identifier
- GNA-25 GCVE registry
Products
1 product registered by Exim ProjectExim
Recent vulnerabilities
70 published under the CPE names of this organization's products in cvelistv5CVE-2026-94054 (GCVE-0-2026-94054)
Vulnerability from cvelistv5 – Published: 2026-09-19 22:46 – Updated: 2026-09-22 16:07
VLAI
EPSS
VEX
Summary
Exim before 4.100.1, when Proxy-Protocol is used with an attacker-controlled proxy, has an out-of-bounds write.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-22 16:06 UTC
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
1 reference
Impacted products
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CVE-2026-94057 (GCVE-0-2026-94057)
Vulnerability from cvelistv5 – Published: 2026-09-19 22:55 – Updated: 2026-09-22 15:59
VLAI
EPSS
VEX
Summary
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.
Severity
4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-22 15:59 UTC
CWE
- CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
References
1 reference
Impacted products
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CVE-2026-94056 (GCVE-0-2026-94056)
Vulnerability from cvelistv5 – Published: 2026-09-19 22:52 – Updated: 2026-09-21 18:32
VLAI
EPSS
VEX
Summary
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.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-21 18:32 UTC
CWE
- CWE-908 - Use of Uninitialized Resource
Assigner
References
1 reference
Impacted products
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CVE-2026-94055 (GCVE-0-2026-94055)
Vulnerability from cvelistv5 – Published: 2026-09-19 22:48 – Updated: 2026-09-21 15:19
VLAI
EPSS
VEX
Summary
Exim before 4.100.1, when certain non-default TLS settings are used with GnuTLS, has a use-after-free.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-21 15:18 UTC
CWE
- CWE-416 - Use After Free
Assigner
References
1 reference
Impacted products
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CVE-2026-66141 (GCVE-0-2026-66141)
Vulnerability from cvelistv5 – Published: 2026-07-24 04:37 – Updated: 2026-07-24 18:42
VLAI
EPSS
VEX
Summary
Exim before 4.99.5 allows .forward privilege escalation because force_command for a pipe transport is mishandled.
Severity
7.4 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-24 18:42 UTC
CWE
- CWE-829 - Inclusion of Functionality from Untrusted Control Sphere
Assigner
References
1 reference
Impacted products
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CVE-2026-66140 (GCVE-0-2026-66140)
Vulnerability from cvelistv5 – Published: 2026-07-24 04:32 – Updated: 2026-07-24 12:25
VLAI
EPSS
VEX
Summary
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.
Severity
8.4 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-24 12:24 UTC
CWE
- CWE-24 - Path Traversal: '../filedir'
Assigner
References
1 reference
Impacted products
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CVE-2026-48840 (GCVE-0-2026-48840)
Vulnerability from cvelistv5 – Published: 2026-05-30 01:50 – Updated: 2026-06-05 09:07 X_Open Source
VLAI
EPSS
VEX
Summary
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.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-01 12:51 UTC
CWE
- CWE-839 - Numeric Range Comparison Without Minimum Check
Assigner
References
Impacted products
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CVE-2026-45185 (GCVE-0-2026-45185)
Vulnerability from cvelistv5 – Published: 2026-05-12 00:00 – Updated: 2026-05-14 03:55
VLAI
EPSS
VEX
Summary
Exim before 4.99.3, in certain GnuTLS configurations, has a remotely reachable use-after-free in the BDAT body parsing path. It is triggered when a client sends a TLS close_notify mid-body during a CHUNKING transfer, followed by a final cleartext byte on the same TCP connection. This can lead to heap corruption. An unauthenticated network attacker exploiting this vulnerability could execute arbitrary code.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-13 00:00 UTC
CWE
- CWE-416 - Use After Free
Assigner
References
8 references
Impacted products
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CVE-2026-40684 (GCVE-0-2026-40684)
Vulnerability from cvelistv5 – Published: 2026-04-30 00:00 – Updated: 2026-05-01 17:22
VLAI
EPSS
VEX
Summary
In Exim before 4.99.2, on systems using musl libc (not glibc), an attacker can crash the connection instance when malformed DNS data is present in PTR records. This is caused by a dn_expand oddity in octal printing.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-01 14:25 UTC
CWE
- CWE-684 - Incorrect Provision of Specified Functionality
Assigner
References
Impacted products
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CVE-2026-40686 (GCVE-0-2026-40686)
Vulnerability from cvelistv5 – Published: 2026-04-30 00:00 – Updated: 2026-05-01 14:27
VLAI
EPSS
VEX
Summary
In Exim before 4.99.2, when utf8 operators are enabled, there is an out-of-bounds read if large UTF-8 trailing characters are present (malformed UTF-8 header data). Information might be divulged within an error message produced during handling of an unrelated e-mail message.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-01 14:27 UTC
CWE
- CWE-125 - Out-of-bounds Read
Assigner
References
Impacted products
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displaying 1 - 10 vulnerabilities in total 70