What’s Vulnerable › Vulnerabilities

CVE-2021-38371

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-08-10 · updated 2026-06-17
• Weakness: CWE-74

Description

The STARTTLS feature in Exim through 4.94.2 allows response injection (buffering) during MTA SMTP sending.

Affected products

• Exim: through 4.94.2

References

• https://nostarttls.secvuln.info
• https://www.exim.org
• https://www.exim.org/static/doc/security/CVE-2021-38371.txt
• https://lists.debian.org/debian-lts-announce/2024/10/msg00029.html
• https://nostarttls.secvuln.info
• https://www.exim.org
• https://www.exim.org/static/doc/security/CVE-2021-38371.txt

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