CVE-2020-1693

Name: CVE-2020-1693
Creator: NVD / NIST
Published: 2020-02-17T20:15:11.35+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 4.16%

Last modified Jun 17, 2026

CVE-2020-1693 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. A flaw was found in Spacewalk up to version 2.9 where it was vulnerable to XML internal entity attacks via the /rpc/api endpoint. An unauthenticated remote attacker could use this flaw to retrieve the content of certain files and trigger a denial of service, or in certain circumstances, execute arbitrary code on the Spacewalk server.. EPSS estimates a 4.16% chance of exploitation in the next 30 days.

Description

A flaw was found in Spacewalk up to version 2.9 where it was vulnerable to XML internal entity attacks via the /rpc/api endpoint. An unauthenticated remote attacker could use this flaw to retrieve the content of certain files and trigger a denial of service, or in certain circumstances, execute arbitrary code on the Spacewalk server.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

4.16%

89.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Redhat	Spacewalk	< 2.9

References

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1693Issue Tracking, Vendor Advisory
https://github.com/spacewalkproject/spacewalk/commit/74e28ec61d916c42061ef4347121650a1c962b0cPatch
https://zeroauth.ltd/blog/2020/02/18/proof-of-concept-exploit-for-cve-2020-1693-spacewalk/Exploit, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1693Issue Tracking, Vendor Advisory
https://github.com/spacewalkproject/spacewalk/commit/74e28ec61d916c42061ef4347121650a1c962b0cPatch
https://zeroauth.ltd/blog/2020/02/18/proof-of-concept-exploit-for-cve-2020-1693-spacewalk/Exploit, Third Party Advisory

Timeline

Published: Feb 17, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-1693?

How severe is CVE-2020-1693?

CVE-2020-1693 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 4.16% probability of exploitation in the next 30 days.

How do I fix CVE-2020-1693?

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-2020-1693?

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

Scan your code now

Source: NVD / NIST