CVE-2001-0537

NONECVSS 0.0Weaponized

0.0

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.

CVSS v3: —
EG Score: —
EPSS: 99.9%
KEV: Not listed

Published

July 21, 2001

Last Modified

April 16, 2026

References (20)

cve@mitrehttp://www.cert.org/advisories/CA-2001-14.html
cve@mitrehttp://www.ciac.org/ciac/bulletins/l-106.shtml
cve@mitrehttp://www.cisco.com/warp/public/707/IOS-httplevel-pub.html
cve@mitrehttp://www.osvdb.org/578
cve@mitrehttp://www.securityfocus.com/archive/1/1601227034.20010702112207%40olympos.org
cve@mitrehttp://www.securityfocus.com/archive/1/20010703011650.60515.qmail%40web14910.mail.yahoo.com
cve@mitrehttp://www.securityfocus.com/archive/1/4.3.2.7.2.20010629095801.0c3e6a70%40brussels.cisco.com
cve@mitrehttp://www.securityfocus.com/archive/1/Pine.LNX.3.96.1010702134611.22995B-100000%40Lib-Vai.lib.asu.edu
cve@mitrehttp://www.securityfocus.com/bid/2936
cve@mitrehttps://exchange.xforce.ibmcloud.com/vulnerabilities/6749
af854a3a-2127-422b-91ae-364da2661108http://www.cert.org/advisories/CA-2001-14.html
af854a3a-2127-422b-91ae-364da2661108http://www.ciac.org/ciac/bulletins/l-106.shtml
af854a3a-2127-422b-91ae-364da2661108http://www.cisco.com/warp/public/707/IOS-httplevel-pub.html
af854a3a-2127-422b-91ae-364da2661108http://www.osvdb.org/578
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/archive/1/1601227034.20010702112207%40olympos.org

Data Freshness Timeline

(refreshed 6× in last 7d / 9× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-27 13:37 UTCepss_batch
2026-05-27 13:37 UTCepss_batch
2026-05-26 07:16 UTCepss_batch
2026-05-26 07:16 UTCepss_batch
2026-05-24 16:42 UTCepss_batch
2026-05-22 21:15 UTCepss_batch
2026-05-21 22:38 UTCepss_batch
2026-05-18 21:29 UTCepss_batch
2026-05-18 21:29 UTCepss_batch

Publicly available exploits

(6 references)

Working exploit code is in the public domain (1 Metasploit module) (4 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

Exploit-DBEDB-20975✓ verified
First seen Jun 27, 2001
Cisco IOS 11.x/12.x - HTTP Configuration Arbitrary Administrative Access (1)
Open source ↗
Exploit-DBEDB-20976✓ verified
First seen Jun 27, 2001
Cisco IOS 11.x/12.x - HTTP Configuration Arbitrary Administrative Access (2)
Open source ↗
Exploit-DBEDB-20978✓ verified
First seen Jun 27, 2001
Cisco IOS 11.x/12.x - HTTP Configuration Arbitrary Administrative Access (4)
Open source ↗
Metasploitauxiliary/scanner/http/cisco_ios_auth_bypass✓ verified
First seen Jun 27, 2001
Cisco IOS HTTP Unauthorized Administrative Access
Open source ↗
Exploit-DBEDB-20977✓ verified
First seen Mar 7, 2001
Cisco IOS 11.x/12.x - HTTP Configuration Arbitrary Administrative Access (3)
Open source ↗
Nucleihttp/cves/2001/CVE-2001-0537.yaml
First seen Jan 1, 2001
Cisco IOS HTTP Configuration - Authentication Bypass
Open source ↗

Frequently asked(4)

What is CVE-2001-0537?

CVE-2001-0537 is a none vulnerability published on July 21, 2001. 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.

When was CVE-2001-0537 disclosed?

CVE-2001-0537 was first published in the National Vulnerability Database on July 21, 2001, with the most recent update on April 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2001-0537 actively exploited?

CVE-2001-0537 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-2001-0537?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2001-0537, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2001-0537

📅 Published

🔄 Last Modified

🔗 References (20)