How severe is CVE-2011-4005?

CVE-2011-4005 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2011-4005 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-4005?

CVE-2011-4005 primarily affects Cisco Small Business Srp521w. In total, 12 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-4005?

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-2011-4005 published?

CVE-2011-4005 was published on 2011-11-03 and last updated on 2026-06-16.

CVE-2011-4005

CVE-2011-4005 is a critical-severity vulnerability in Cisco Small Business Srp521w with a CVSS 2.0 base score of 9.3. 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-352.

Key facts

Severity: Critical (CVSS 2.0 base score 9.3)
EPSS exploit prediction: 2% (76th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-352
Affected product: Cisco Small Business Srp521w
Published: 2011-11-03
Last modified: 2026-06-16

Description

Cross-site request forgery (CSRF) vulnerability in the Services Ready Platform Configuration Utility web interface on the Cisco Small Business SRP521W, SRP526W, and SRP527W with firmware before 1.1.24 and the Small Business SRP541W, SRP546W, and SRP547W with firmware before 1.2.1 allows remote attackers to hijack the authentication of administrators for requests that execute arbitrary commands, aka Bug ID CSCtr45124.

Frequently asked questions

What is CVE-2011-4005?: Cross-site request forgery (CSRF) vulnerability in the Services Ready Platform Configuration Utility web interface on the Cisco Small Business SRP521W, SRP526W, and SRP527W with firmware before 1.1.24 and the Small Business SRP541W, SRP546W, and SRP547W with firmware before 1.2.1 allows remote attackers to hijack the authentication of administrators for requests that execute arbitrary commands, aka Bug ID CSCtr45124.
How severe is CVE-2011-4005?: CVE-2011-4005 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2011-4005 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-4005?: CVE-2011-4005 primarily affects Cisco Small Business Srp521w. In total, 12 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-4005?: 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-2011-4005 published?: CVE-2011-4005 was published on 2011-11-03 and last updated on 2026-06-16.

References

Affected products (12)

cpe:2.3:h:cisco:small_business_srp521w:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:small_business_srp526w:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:small_business_srp527w:*:*:*:*:*:*:*:*
cpe:2.3:a:cisco:small_business_srp520_series_firmware:*:*:*:*:*:*:*:*
cpe:2.3:a:cisco:small_business_srp520_series_firmware:1.00.06:*:*:*:*:*:*:*
cpe:2.3:a:cisco:small_business_srp520_series_firmware:1.01.01:*:*:*:*:*:*:*
cpe:2.3:a:cisco:small_business_srp520_series_firmware:1.01.19_mr3:*:*:*:*:*:*:*
cpe:2.3:h:cisco:small_business_srp541w:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:small_business_srp546w:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:small_business_srp547w:*:*:*:*:*:*:*:*
cpe:2.3:a:cisco:small_business_srp540_series_firmware:*:*:*:*:*:*:*:*
cpe:2.3:a:cisco:small_business_srp540_series_firmware:1.02.00:*:*:*:*:*:*:*

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