CVE-2001-0537

CVE-2001-0537 is a critical-severity vulnerability in Cisco Ios with a CVSS 2.0 base score of 9.3. Its EPSS exploit-prediction score of 68% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-287.

Key facts

Description

HTTP server for Cisco IOS 11.3 to 12.2 allows attackers to bypass authentication and execute arbitrary commands, when local authorization is being used, by specifying a high access level in the URL.

Frequently asked questions

What is CVE-2001-0537?
HTTP server for Cisco IOS 11.3 to 12.2 allows attackers to bypass authentication and execute arbitrary commands, when local authorization is being used, by specifying a high access level in the URL.
How severe is CVE-2001-0537?
CVE-2001-0537 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2001-0537 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 68% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2001-0537?
CVE-2001-0537 primarily affects Cisco Ios. In total, 91 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2001-0537?
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-2001-0537 published?
CVE-2001-0537 was published on 2001-07-21 and last updated on 2026-06-16.

References

Affected products (91)

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