High severity · published Aug 10, 2021
CVE-2021-38371
The STARTTLS feature in Exim through 4.94.2 allows response injection (buffering) during MTA SMTP sending
7.5
CVSS
2%
EPSS
No
On KEV
Description
The STARTTLS feature in Exim through 4.94.2 allows response injection (buffering) during MTA SMTP sending.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.0% · higher than 81% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EX
Exim · Exim
through 4.94.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-38371
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-38371
Tool Signature
https://nostarttls.secvuln.info
Product
https://www.exim.org
Broken Link
https://www.exim.org/static/doc/security/CVE-2021-38371.txt
lists.debian.org
https://lists.debian.org/debian-lts-announce/2024/10/msg00029.html
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