CVE-2020-17525

Name: CVE-2020-17525
Creator: NVD / NIST
Published: 2021-03-17T10:15:11.873+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 37.52%

Last modified Jun 17, 2026

CVE-2020-17525 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Subversion's mod_authz_svn module will crash if the server is using in-repository authz rules with the AuthzSVNReposRelativeAccessFile option and a client sends a request for a non-existing repository URL. This can lead to disruption for users of the service. EPSS estimates a 37.52% chance of exploitation in the next 30 days.

Description

Subversion's mod_authz_svn module will crash if the server is using in-repository authz rules with the AuthzSVNReposRelativeAccessFile option and a client sends a request for a non-existing repository URL. This can lead to disruption for users of the service. This issue was fixed in mod_dav_svn+mod_authz_svn servers 1.14.1 and mod_dav_svn+mod_authz_svn servers 1.10.7

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

37.52%

98.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Apache	Subversion	>= 1.9.0, < 1.10.7
Apache	Subversion	>= 1.11.0, < 1.14.1
Debian	Debian Linux	9.0

References

https://lists.debian.org/debian-lts-announce/2021/05/msg00000.htmlMailing List, Third Party Advisory
https://subversion.apache.org/security/CVE-2020-17525-advisory.txtExploit, Patch, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2021/05/msg00000.htmlMailing List, Third Party Advisory
https://subversion.apache.org/security/CVE-2020-17525-advisory.txtExploit, Patch, Vendor Advisory

Timeline

Published: Mar 17, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-17525?

How severe is CVE-2020-17525?

CVE-2020-17525 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 37.52% probability of exploitation in the next 30 days.

How do I fix CVE-2020-17525?

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.

Are you affected by CVE-2020-17525?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST