How severe is CVE-2016-1303?

CVE-2016-1303 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2016-1303 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-1303?

CVE-2016-1303 affects Cisco 500 Series Switch Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2016-1303?

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

When was CVE-2016-1303 published?

CVE-2016-1303 was published on 2016-01-30 and last updated on 2026-06-17.

CVE-2016-1303

CVE-2016-1303 is a high-severity vulnerability in Cisco 500 Series Switch Firmware with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 7.8
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Cisco 500 Series Switch Firmware
Published: 2016-01-30
Last modified: 2026-06-17

Description

The web GUI on Cisco Small Business 500 devices 1.2.0.92 allows remote attackers to cause a denial of service via a crafted HTTP request, aka Bug ID CSCul65330.

Frequently asked questions

What is CVE-2016-1303?: The web GUI on Cisco Small Business 500 devices 1.2.0.92 allows remote attackers to cause a denial of service via a crafted HTTP request, aka Bug ID CSCul65330.
How severe is CVE-2016-1303?: CVE-2016-1303 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2016-1303 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-1303?: CVE-2016-1303 affects Cisco 500 Series Switch Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2016-1303?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2016-1303 published?: CVE-2016-1303 was published on 2016-01-30 and last updated on 2026-06-17.

References

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160128-sbs

Affected products (1)

cpe:2.3:o:cisco:500_series_switch_firmware:1.2.0.92:*:*:*:*:*:*:*

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