CVE-2020-15069

CRITICALNVD 9.89.8—

9.8

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.

CVSS v3: 9.8
EG Score: 9.8(high)
EPSS: 99.3%
KEV: ⚠ Exploited

Published

June 29, 2020

Last Modified

November 7, 2025

References (3)

cve@mitrehttps://community.sophos.com/b/security-blog/posts/advisory-buffer-overflow-vulnerability-in-user-portal
af854a3a-2127-422b-91ae-364da2661108https://community.sophos.com/b/security-blog/posts/advisory-buffer-overflow-vulnerability-in-user-portal
134c704f-9b21-4f2e-91b3-4a467353bcc0https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-15069

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-120Buffer Copy without Checking Size (Classic Buffer Overflow)

Data Freshness Timeline

(refreshed 4× in last 7d / 4× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-27 20:35 UTCkev_newly_listed
2026-05-26 19:16 UTCEG score recompute
2026-05-26 19:16 UTCGHSA enrichment
2026-05-26 19:13 UTCkev_newly_listed

Frequently asked(6)

What is CVE-2020-15069?

CVE-2020-15069 is a critical vulnerability published on June 29, 2020. 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.

When was CVE-2020-15069 disclosed?

CVE-2020-15069 was first published in the National Vulnerability Database on June 29, 2020, with the most recent update on November 7, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2020-15069 actively exploited?

Yes. CISA added CVE-2020-15069 to the Known Exploited Vulnerabilities catalog on February 6, 2025, affecting Sophos XG Firewall. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.

What is the CVSS score of CVE-2020-15069?

CVE-2020-15069 has a CVSS v3 base score of 9.8 (NVD).

Which products are affected by CVE-2020-15069?

CVE-2020-15069 affects Sophos XG Firewall. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.

How do I remediate CVE-2020-15069?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-15069, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2020-15069

📅 Published

🔄 Last Modified

🔗 References (3)