CVE-2021-41585

Name: CVE-2021-41585
Creator: NVD / NIST
Published: 2021-11-03T16:15:08.187+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 2.41%

Last modified Jun 17, 2026

CVE-2021-41585 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Improper Input Validation vulnerability in accepting socket connections in Apache Traffic Server allows an attacker to make the server stop accepting new connections. This issue affects Apache Traffic Server 5.0.0 to 9.1.0.. EPSS estimates a 2.41% chance of exploitation in the next 30 days.

Description

Improper Input Validation vulnerability in accepting socket connections in Apache Traffic Server allows an attacker to make the server stop accepting new connections. This issue affects Apache Traffic Server 5.0.0 to 9.1.0.

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

2.41%

82.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Apache	Traffic Server	>= 8.0.0, <= 8.1.2
Apache	Traffic Server	>= 9.0.0, <= 9.1.0

References

https://lists.apache.org/thread/k01797hyncx53659wr3o72s5cvkc3164Mailing List, Patch, Vendor Advisory
https://lists.apache.org/thread/k01797hyncx53659wr3o72s5cvkc3164Mailing List, Patch, Vendor Advisory

Timeline

Published: Nov 3, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-41585?

How severe is CVE-2021-41585?

CVE-2021-41585 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 2.41% probability of exploitation in the next 30 days.

How do I fix CVE-2021-41585?

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-2021-41585?

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

Scan your code now

Source: NVD / NIST