CVE-2021-21479

Name: CVE-2021-21479
Creator: NVD / NIST
Published: 2021-02-09T21:15:13.863+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.1/10EPSS 8.71%

Last modified Jun 17, 2026

CVE-2021-21479 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. In SCIMono before 0.0.19, it is possible for an attacker to inject and execute java expression compromising the availability and integrity of the system.. EPSS estimates a 8.71% chance of exploitation in the next 30 days.

Description

In SCIMono before 0.0.19, it is possible for an attacker to inject and execute java expression compromising the availability and integrity of the system.

Metrics

CVSS 3.1

9.1/10

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

EPSS Probability

8.71%

94.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-74

Affected Software

Vendor	Product	Versions
Sap	Scimono	< 0.0.19

References

https://github.com/SAP/scimono/security/advisories/GHSA-29q4-gxjq-rx5cThird Party Advisory
https://github.com/SAP/scimono/security/advisories/GHSA-29q4-gxjq-rx5cThird Party Advisory

Timeline

Published: Feb 9, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-21479?

In SCIMono before 0.0.19, it is possible for an attacker to inject and execute java expression compromising the availability and integrity of the system.

How severe is CVE-2021-21479?

CVE-2021-21479 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 8.71% probability of exploitation in the next 30 days.

How do I fix CVE-2021-21479?

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-2021-21479?

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

Scan your code now

Source: NVD / NIST