CVE-2020-15069
Published: February 6, 2025
Official Description
Sophos XG Firewall contains a buffer overflow vulnerability that allows for remote code execution via the "HTTP/S bookmark" feature.
CISA KEV Advisory
Sophos XG Firewall Buffer Overflow Vulnerability
Sophos XG Firewall contains a buffer overflow vulnerability that allows for remote code execution via the "HTTP/S bookmark" feature.
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Risk Analysis
A buffer overflow in Sophos XG Firewall's HTTP/S bookmark feature can lead to remote code execution. The high EPSS score of 0.82581 suggests a very high probability of exploitation, and its presence in CISA's KEV catalog confirms active exploitation.
This vulnerability has been actively exploited in the wild, indicating a significant and immediate threat. It is remotely exploitable.
Update your Sophos XG Firewall to a patched version to remediate this buffer overflow vulnerability. Ensure all network security appliances are kept up-to-date.
Technical Analysis
CVE-2020-15069 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CISA has added CVE-2020-15069 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.
Exploit & PoC Resources
All References (2)
Quick Facts
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2020-15069 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
- !CISA KEV: Federal agencies must patch per BOD 22-01 timeline
- !Active exploitation confirmed — treat as P1