CVE-2020-12271A SQL injection issue was found in SFOS 17.0, 17.1, 17.5, and 18.0 before 2020-04-25 on Sophos XG Firewall devices, as exploited in the wild in April 2020.
Updated under an hour ago ()
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CISA lists it as known exploited since Nov 3, 2021; federal agencies had to remediate by May 3, 2022, and it is known to be used in ransomware. Treat that date as your deadline.
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A SQL injection issue was found in SFOS 17.0, 17.1, 17.5, and 18.0 before 2020-04-25 on Sophos XG Firewall devices, as exploited in the wild in April 2020. This affected devices configured with either the administration (HTTPS) service or the User Portal exposed on the WAN zone. A successful attack may have caused remote code execution that exfiltrated usernames and hashed passwords for the local device admin(s), portal admins, and user accounts used for remote access (but not external Active Directory or LDAP passwords)
- CVSS
- 10.0 CRITICAL (v3.0, CNA)CVSS:3.0/AC:L/AV:N/A:H/C:H/I:H/PR:N/S:C/UI:N
- Weakness (CWE)
- CWE-89
- Known exploited
- Added to CISA KEV Nov 3, 2021; federal remediation due May 3, 2022; known ransomware useApply updates per vendor instructions.
- EPSS (exploitation in the next 30 days)
- 42.43% (percentile 99)
- Assigned by
- mitre
- NVD analysis
- Analyzed
- Record last updated
- Oct 21, 2025
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
sophos sfos sophos:sfos | 17.0; 17.1; 17.5; 18.0 | NVD |
References
- https://cwe.mitre.org/data/definitions/89.htmlx-refsource-misc, third-party-advisory
- https://community.sophos.com/kb/en-us/135412x-refsource-misc, vendor-advisory
- https://news.sophos.com/en-us/2020/04/26/asnarok/x-refsource-misc, exploit, vendor-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-12271us-government-resource
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.