CVE-2021-4259

Name: CVE-2021-4259
Creator: NVD / NIST
Published: 2022-12-19T14:15:10.497+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 0.78%

Last modified Jun 17, 2026

CVE-2021-4259 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. A vulnerability was found in phpRedisAdmin up to 1.16.1. It has been classified as problematic. EPSS estimates a 0.78% chance of exploitation in the next 30 days.

Description

A vulnerability was found in phpRedisAdmin up to 1.16.1. It has been classified as problematic. This affects the function authHttpDigest of the file includes/login.inc.php. The manipulation of the argument response leads to use of wrong operator in string comparison. Upgrading to version 1.16.2 is able to address this issue. The name of the patch is 31aa7661e6db6f4dffbf9a635817832a0a11c7d9. It is recommended to upgrade the affected component. The associated identifier of this vulnerability is VDB-216267.

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

0.78%

51.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-597

Affected Software

Vendor	Product	Versions
Phpredisadmin Project	Phpredisadmin	< 1.16.2

References

https://github.com/erikdubbelboer/phpRedisAdmin/commit/31aa7661e6db6f4dffbf9a635817832a0a11c7d9Patch, Third Party Advisory
https://github.com/erikdubbelboer/phpRedisAdmin/releases/tag/v1.16.2Release Notes, Third Party Advisory
https://vuldb.com/?id.216267Permissions Required, Third Party Advisory, VDB Entry
https://github.com/erikdubbelboer/phpRedisAdmin/commit/31aa7661e6db6f4dffbf9a635817832a0a11c7d9Patch, Third Party Advisory
https://github.com/erikdubbelboer/phpRedisAdmin/releases/tag/v1.16.2Release Notes, Third Party Advisory
https://vuldb.com/?id.216267Permissions Required, Third Party Advisory, VDB Entry

Timeline

Published: Dec 19, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-4259?

How severe is CVE-2021-4259?

CVE-2021-4259 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.78% probability of exploitation in the next 30 days.

How do I fix CVE-2021-4259?

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-2021-4259?

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

Scan your code now

Source: NVD / NIST