CVE-2022-27631

Name: CVE-2022-27631
Creator: NVD / NIST
Published: 2022-08-05T22:15:11.373+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 0.99%

Last modified Jun 17, 2026

CVE-2022-27631 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. A memory corruption vulnerability exists in the httpd unescape functionality of DD-WRT Revision 32270 - Revision 48599. A specially-crafted HTTP request can lead to memory corruption. EPSS estimates a 0.99% chance of exploitation in the next 30 days.

Description

A memory corruption vulnerability exists in the httpd unescape functionality of DD-WRT Revision 32270 - Revision 48599. A specially-crafted HTTP request can lead to memory corruption. An attacker can send a network request to trigger this vulnerability.

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

0.99%

58.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Dd-Wrt	Dd-Wrt	>= 32270, <= 48599

References

https://talosintelligence.com/vulnerability_reports/TALOS-2022-1510Exploit, Third Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2022-1510Exploit, Third Party Advisory

Timeline

Published: Aug 5, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-27631?

How severe is CVE-2022-27631?

CVE-2022-27631 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.99% probability of exploitation in the next 30 days.

How do I fix CVE-2022-27631?

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-2022-27631?

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

Scan your code now

Source: NVD / NIST