CVE-2020-15069

Name: CVE-2020-15069
Creator: NVD / NIST
Published: 2020-06-29T18:15:12.313+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10Actively ExploitedEPSS 10.67%

Last modified Jun 17, 2026

CVE-2020-15069 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Sophos XG Firewall 17.x through v17.5 MR12 allows a Buffer Overflow and remote code execution via the HTTP/S Bookmarks feature for clientless access. Hotfix HF062020.1 was published for all firewalls running v17.x.. CISA has confirmed active exploitation in the wild. EPSS estimates a 10.67% chance of exploitation in the next 30 days.

Description

Sophos XG Firewall 17.x through v17.5 MR12 allows a Buffer Overflow and remote code execution via the HTTP/S Bookmarks feature for clientless access. Hotfix HF062020.1 was published for all firewalls running v17.x.

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

10.67%

95.2th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Feb 27, 2025.

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Sophos	Xg Firewall Firmware	>= 17.0, < 17.5
Sophos	Xg Firewall Firmware	17.5

References

https://community.sophos.com/b/security-blog/posts/advisory-buffer-overflow-vulnerability-in-user-portalMitigation, Vendor Advisory
https://community.sophos.com/b/security-blog/posts/advisory-buffer-overflow-vulnerability-in-user-portalMitigation, Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-15069US Government Resource

Timeline

Published: Jun 29, 2020
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2020-15069?

How severe is CVE-2020-15069?

CVE-2020-15069 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 10.67% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2020-15069?

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-2020-15069?

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

Scan your code now

Source: NVD / NIST