CVE-2016-9553
The Sophos Web Appliance (version 4.2.1.3) is vulnerable to two Remote Command Injection vulnerabilities affecting its web administrative interface.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 19.8%, higher than 97% of all known CVEs. Patch or mitigate before the next change window.
Description
The Sophos Web Appliance (version 4.2.1.3) is vulnerable to two Remote Command Injection vulnerabilities affecting its web administrative interface. These vulnerabilities occur in the MgrReport.php (/controllers/MgrReport.php) component responsible for blocking and unblocking IP addresses from accessing the device. The device doesn't properly escape the information passed in the variables 'unblockip' and 'blockip' before calling the shell_exec() function which allows for system commands to be injected into the device. The code erroneously suggests that the information handled is protected by utilizing the variable name 'escapedips' - however this was not the case. The Sophos ID is NSWA-1258.
- CVSS 3.0
- 7.2 HIGHCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 19.81% probability · 97th percentile
- Public exploits
- 1 in Exploit-DB · verified · first 12 December 2016
- CISA KEV
- Not listed
- Weakness
- CWE-77
- Affected
- sophos/web appliance
- Source
- cve@mitre.org
EPSS moved from 16.3% on 21 September 2026 to 19.8% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- http://pastebin.com/DUYuN0U5Exploit
- http://swa.sophos.com/rn/swa/concepts/ReleaseNotes_4.3.1.htmlRelease Notes
- http://www.securityfocus.com/bid/95853Third Party Advisory, VDB Entry
- https://community.sophos.com/products/web-appliance/b/blog/posts/release-of-swa-version-4-3-1Release Notes
- http://pastebin.com/DUYuN0U5Exploit
- http://swa.sophos.com/rn/swa/concepts/ReleaseNotes_4.3.1.htmlRelease Notes
- http://www.securityfocus.com/bid/95853Third Party Advisory, VDB Entry
- https://community.sophos.com/products/web-appliance/b/blog/posts/release-of-swa-version-4-3-1Release Notes
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.