CVE-2015-6811: SQL injection vulnerability in the Sophos Cyberoam CR500iNG-XP firewall appliance with CyberoamOS 10.6.2 MR-1

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HIGH 7.5MITIGATE

CVE-2015-6811 is a high-severity flaw (CVSS 7.5) affecting cyberoamos. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

SQL injection vulnerability in the Sophos Cyberoam CR500iNG-XP firewall appliance with CyberoamOS 10.6.2 MR-1 and earlier allows remote attackers to execute arbitrary SQL commands via the username parameter to login.xml.

Why this priority

High severity
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	1.7% (top 22%)
CISA exploited list	No
Weakness	CWE-89
Published	2015-09-04
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: cyberoam

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2015-09-04 15:59 UTCPublished CVE record published
2026-06-17 00:31 UTCUpdated Record last modified

cyberoam cyberoamos MITIGATE

Affected: 10.6.2 · 10.6.2 beta1 · 10.6.2 beta2 · 10.6.2 maintenance_release-1 · 10.6.2 rc1

Fixed in: no fixed release known

Safe to downgrade to: a release before 10.6.2

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: Cyberoam Firewall CR500iNG-XP 10.6.2 MR-1 - Blind SQL Injection

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2015-6811?

cyberoamos: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2015-6811 being exploited?

CVE-2015-6811 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2015-6811 affect?

CVE-2015-6811 affects cyberoamos. Severity is high (CVSS 7.5). SQL injection vulnerability in the Sophos Cyberoam CR500iNG-XP firewall appliance with CyberoamOS 10.6.2 MR-1 and earlier allows remote attackers to execute arbitrary SQL commands via the username parameter to login.xml.

How urgent is CVE-2015-6811?

Priority 51/100. High severity; Public exploit reference

Software pages

Sophos vulnerabilities

Related CVEs

CVE-2020-29574 CRITICAL 9.8 EXPLOITED UPGRADE CyberoamOS (CROS) SQL Injection Vulnerability
CVE-2019-17059 CRITICAL 9.8 UPGRADE A shell injection vulnerability on the Sophos Cyberoam firewall appliance with CyberoamOS before 10.6.6 MR-6 a

References

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