How severe is CVE-2013-4983?

CVE-2013-4983 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2013-4983 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 90% (100th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-4983?

CVE-2013-4983 primarily affects Sophos Web Appliance Firmware. In total, 76 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2013-4983?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2013-4983 published?

CVE-2013-4983 was published on 2013-09-10 and last updated on 2026-06-16.

CVE-2013-4983

CVE-2013-4983 is a critical-severity vulnerability in Sophos Web Appliance Firmware with a CVSS 2.0 base score of 10.0. Its EPSS exploit-prediction score of 90% places it in the 100th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-78.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 90% (100th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Sophos Web Appliance Firmware
Published: 2013-09-10
Last modified: 2026-06-16

Description

The get_referers function in /opt/ws/bin/sblistpack in Sophos Web Appliance before 3.7.9.1 and 3.8 before 3.8.1.1 allows remote attackers to execute arbitrary commands via shell metacharacters in the domain parameter to end-user/index.php.

Frequently asked questions

What is CVE-2013-4983?: The get_referers function in /opt/ws/bin/sblistpack in Sophos Web Appliance before 3.7.9.1 and 3.8 before 3.8.1.1 allows remote attackers to execute arbitrary commands via shell metacharacters in the domain parameter to end-user/index.php.
How severe is CVE-2013-4983?: CVE-2013-4983 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2013-4983 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 90% (100th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-4983?: CVE-2013-4983 primarily affects Sophos Web Appliance Firmware. In total, 76 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-4983?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2013-4983 published?: CVE-2013-4983 was published on 2013-09-10 and last updated on 2026-06-16.

References

Affected products (76)

cpe:2.3:a:sophos:web_appliance_firmware:3.7.8:*:*:*:*:*:*:*
cpe:2.3:o:sophos:web_appliance_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:sophos:web_appliance_firmware:3.0.0:*:*:*:*:*:*:*
cpe:2.3:o:sophos:web_appliance_firmware:3.0.1:*:*:*:*:*:*:*
cpe:2.3:o:sophos:web_appliance_firmware:3.0.1.1:*:*:*:*:*:*:*
cpe:2.3:o:sophos:web_appliance_firmware:3.0.2:*:*:*:*:*:*:*
cpe:2.3:o:sophos:web_appliance_firmware:3.0.3:*:*:*:*:*:*:*
cpe:2.3:o:sophos:web_appliance_firmware:3.0.4:*:*:*:*:*:*:*
cpe:2.3:o:sophos:web_appliance_firmware:3.0.5:*:*:*:*:*:*:*
cpe:2.3:o:sophos:web_appliance_firmware:3.0.5.1:*:*:*:*:*:*:*
cpe:2.3:o:sophos:web_appliance_firmware:3.1.0:*:*:*:*:*:*:*
cpe:2.3:o:sophos:web_appliance_firmware:3.1.0.1:*:*:*:*:*:*:*
cpe:2.3:o:sophos:web_appliance_firmware:3.1.1:*:*:*:*:*:*:*
cpe:2.3:o:sophos:web_appliance_firmware:3.1.2:*:*:*:*:*:*:*
cpe:2.3:o:sophos:web_appliance_firmware:3.1.3:*:*:*:*:*:*:*
cpe:2.3:o:sophos:web_appliance_firmware:3.1.4:*:*:*:*:*:*:*
cpe:2.3:o:sophos:web_appliance_firmware:3.2.1:*:*:*:*:*:*:*
cpe:2.3:o:sophos:web_appliance_firmware:3.2.2:*:*:*:*:*:*:*
cpe:2.3:o:sophos:web_appliance_firmware:3.2.2.1:*:*:*:*:*:*:*
cpe:2.3:o:sophos:web_appliance_firmware:3.2.3:*:*:*:*:*:*:*
cpe:2.3:o:sophos:web_appliance_firmware:3.2.4:*:*:*:*:*:*:*
cpe:2.3:o:sophos:web_appliance_firmware:3.2.5:*:*:*:*:*:*:*
cpe:2.3:o:sophos:web_appliance_firmware:3.2.6:*:*:*:*:*:*:*
cpe:2.3:o:sophos:web_appliance_firmware:3.2.7:*:*:*:*:*:*:*
cpe:2.3:o:sophos:web_appliance_firmware:3.3.0:*:*:*:*:*:*:*
cpe:2.3:o:sophos:web_appliance_firmware:3.3.1:*:*:*:*:*:*:*
cpe:2.3:o:sophos:web_appliance_firmware:3.3.2:*:*:*:*:*:*:*
cpe:2.3:o:sophos:web_appliance_firmware:3.3.3:*:*:*:*:*:*:*
cpe:2.3:o:sophos:web_appliance_firmware:3.3.3.1:*:*:*:*:*:*:*
cpe:2.3:o:sophos:web_appliance_firmware:3.3.4:*:*:*:*:*:*:*
cpe:2.3:o:sophos:web_appliance_firmware:3.3.5:*:*:*:*:*:*:*
cpe:2.3:o:sophos:web_appliance_firmware:3.3.5.1:*:*:*:*:*:*:*
cpe:2.3:o:sophos:web_appliance_firmware:3.3.6:*:*:*:*:*:*:*
cpe:2.3:o:sophos:web_appliance_firmware:3.3.6.1:*:*:*:*:*:*:*
cpe:2.3:o:sophos:web_appliance_firmware:3.4.0:*:*:*:*:*:*:*
cpe:2.3:o:sophos:web_appliance_firmware:3.4.1:*:*:*:*:*:*:*
cpe:2.3:o:sophos:web_appliance_firmware:3.4.2:*:*:*:*:*:*:*
cpe:2.3:o:sophos:web_appliance_firmware:3.4.3:*:*:*:*:*:*:*
cpe:2.3:o:sophos:web_appliance_firmware:3.4.3.1:*:*:*:*:*:*:*
cpe:2.3:o:sophos:web_appliance_firmware:3.4.4:*:*:*:*:*:*:*

More vulnerabilities in Sophos Web Appliance Firmware

CVE-2013-2642 — Critical (CVSS 9.3): Sophos Web Appliance before 3.7.8.2 allows (1) remote attackers to execute arbitrary commands via shell metacharacters…
CVE-2014-2850 — High (CVSS 8.5): The network interface configuration page (netinterface) in Sophos Web Appliance before 3.8.2 allows remote…
CVE-2014-2849 — High (CVSS 8.5): The Change Password dialog box (change_password) in Sophos Web Appliance before 3.8.2 allows remote authenticated users…
CVE-2013-2641 — Medium (CVSS 5.0): Directory traversal vulnerability in patience.cgi in Sophos Web Appliance before 3.7.8.2 allows remote attackers to…
CVE-2013-2643 — Medium (CVSS 4.3): Multiple cross-site scripting (XSS) vulnerabilities in Sophos Web Appliance before 3.7.8.2 allow remote attackers to…

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