CVE-2020-14059

Name: CVE-2020-14059
Creator: NVD / NIST
Published: 2020-06-30T19:15:11.223+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 4.41%

Last modified Jun 17, 2026

CVE-2020-14059 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. An issue was discovered in Squid 5.x before 5.0.3. Due to an Incorrect Synchronization, a Denial of Service can occur when processing objects in an SMP cache because of an Ipc::Mem::PageStack::pop ABA problem during access to the memory page/slot management list.. EPSS estimates a 4.41% chance of exploitation in the next 30 days.

Description

An issue was discovered in Squid 5.x before 5.0.3. Due to an Incorrect Synchronization, a Denial of Service can occur when processing objects in an SMP cache because of an Ipc::Mem::PageStack::pop ABA problem during access to the memory page/slot management list.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

4.41%

90.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-662

Affected Software

Vendor	Product	Versions
Squid-Cache	Squid	>= 5.0, < 5.0.3

References

http://www.squid-cache.org/Advisories/SQUID-2020_5.txtVendor Advisory
http://www.squid-cache.org/Versions/v5/changesets/squid-5-7a5af8db8e0377c06ed9ffbdcb1334389c7cd8ab.patchPatch, Vendor Advisory
https://security.netapp.com/advisory/ntap-20210312-0001/Third Party Advisory
http://www.squid-cache.org/Advisories/SQUID-2020_5.txtVendor Advisory
http://www.squid-cache.org/Versions/v5/changesets/squid-5-7a5af8db8e0377c06ed9ffbdcb1334389c7cd8ab.patchPatch, Vendor Advisory
https://security.netapp.com/advisory/ntap-20210312-0001/Third Party Advisory

Timeline

Published: Jun 30, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-14059?

How severe is CVE-2020-14059?

CVE-2020-14059 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 4.41% probability of exploitation in the next 30 days.

How do I fix CVE-2020-14059?

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-2020-14059?

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

Scan your code now

Source: NVD / NIST