CVE-2021-39272
MEDIUMCVSS 5.9/10EPSS 0.92%
Last modified
CVE-2021-39272 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. Fetchmail before 6.4.22 fails to enforce STARTTLS session encryption in some circumstances, such as a certain situation with IMAP and PREAUTH.. EPSS estimates a 0.92% chance of exploitation in the next 30 days.
Description
Fetchmail before 6.4.22 fails to enforce STARTTLS session encryption in some circumstances, such as a certain situation with IMAP and PREAUTH.
Metrics
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Fetchmail | Fetchmail | < 6.4.22 |
| Fedoraproject | Fedora | 33 |
| Fedoraproject | Fedora | 34 |
| Fedoraproject | Fedora | 35 |
References
- http://www.openwall.com/lists/oss-security/2021/08/27/3Mailing List, Third Party Advisory
- https://nostarttls.secvuln.info/Third Party Advisory
- https://security.gentoo.org/glsa/202209-14Third Party Advisory
- https://www.fetchmail.info/security.htmlVendor Advisory
- http://www.openwall.com/lists/oss-security/2021/08/27/3Mailing List, Third Party Advisory
- https://nostarttls.secvuln.info/Third Party Advisory
- https://security.gentoo.org/glsa/202209-14Third Party Advisory
- https://www.fetchmail.info/security.htmlVendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-39272?
Fetchmail before 6.4.22 fails to enforce STARTTLS session encryption in some circumstances, such as a certain situation with IMAP and PREAUTH.
How severe is CVE-2021-39272?
CVE-2021-39272 has a CVSS score of 5.9/10 (MEDIUM severity). The EPSS model estimates a 0.92% probability of exploitation in the next 30 days.
How do I fix CVE-2021-39272?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-39272?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST