CVE-2020-25721
HIGHCVSS 8.8/10EPSS 1.98%
Last modified
CVE-2020-25721 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Kerberos acceptors need easy access to stable AD identifiers (eg objectSid). Samba as an AD DC now provides a way for Linux applications to obtain a reliable SID (and samAccountName) in issued tickets.. EPSS estimates a 1.98% chance of exploitation in the next 30 days.
Description
Kerberos acceptors need easy access to stable AD identifiers (eg objectSid). Samba as an AD DC now provides a way for Linux applications to obtain a reliable SID (and samAccountName) in issued tickets.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Samba | Samba | >= 4.13.0, < 4.13.14 |
| Samba | Samba | >= 4.14.0, < 4.14.10 |
| Samba | Samba | >= 4.15.0, < 4.15.2 |
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2021728Issue Tracking, Third Party Advisory
- https://bugzilla.samba.org/show_bug.cgi?id=14725Issue Tracking, Vendor Advisory
- https://www.samba.org/samba/security/CVE-2020-25721.htmlVendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2021728Issue Tracking, Third Party Advisory
- https://bugzilla.samba.org/show_bug.cgi?id=14725Issue Tracking, Vendor Advisory
- https://www.samba.org/samba/security/CVE-2020-25721.htmlVendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-25721?
Kerberos acceptors need easy access to stable AD identifiers (eg objectSid). Samba as an AD DC now provides a way for Linux applications to obtain a reliable SID (and samAccountName) in issued tickets.
How severe is CVE-2020-25721?
CVE-2020-25721 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.98% probability of exploitation in the next 30 days.
How do I fix CVE-2020-25721?
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.
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Are you affected by CVE-2020-25721?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST