Is CVE-2021-28116 actively exploited?

CVE-2021-28116 has no public evidence of in-the-wild exploitation as of 2024-11-21.

What is the CVSS score for CVE-2021-28116?

CVE-2021-28116 has a CVSS score of 3.7 (LOW severity). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N.

How do I patch CVE-2021-28116?

Patch guidance is available from squid-cache security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2021-28116.

CVE-2021-28116 - remediation guidance & executive summary

Q: Which products are affected by CVE-2021-28116?

6 products: squid-cache squid, squid-cache squid, fedoraproject fedora, fedoraproject fedora, debian debian linux, and 1 more.

Description

Squid through 4.14 and 5.x through 5.0.5, in some configurations, allows information disclosure because of an out-of-bounds read in WCCP protocol data. This can be leveraged as part of a chain for remote code execution as nobody.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack Vector: network
Complexity: high
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: low
Integrity: none
Availability: none
Weaknesses: CWE-125 · Out-of-bounds Read

Metadata

Primary Vendor: SQUID-CACHE
Published: 3/9/2021
Last Modified: 11/21/2024
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

squid-cache : squidsquid-cache : squidfedoraproject : fedorafedoraproject : fedoradebian : debian_linuxdebian : debian_linux

Remediation Guidance

Executive Summary

Cite this page

CVE-2021-28116. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2021-28116

View on NIST NVD

CVE-2021-28116 vulnerability