CVE-2001-0537
Medium PUBLISHEDHTTP server for Cisco IOS 11.3 to 12.2 allows attackers to bypass authentication and execute arbitrary commands, when local authorization is being...
Not yet in CISA KEV
Recommended Action
Treat as actively exploited. Assess exposure, apply compensating controls where patching is delayed, and monitor for abuse.
At a Glance
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.
- Published
- Mar 09, 2002
- First Seen
- Jun 21, 2025
- CVSS
- 9.3 High
- EPSS
- —
Recommended Actions
- Treat as actively exploited. Assess exposure, apply compensating controls where patching is delayed, and monitor for abuse.
- Check enrichment artifacts for scanner coverage and available PoCs before rolling remediation validation.
- Use the Pro API to automate enrichment, telemetry, and workflow delivery for VM, SOC, and CTI pipelines.
Known Exploited Vulnerability Sources
Catalogues that list this CVE as a known exploited vulnerability.
| Source | Added |
|---|---|
| The Shadowserver (via CIRCL) First | 2025-06-21 00:00 UTC |
References
- http://www.cert.org/advisories/CA-2001-14.html
- http://www.securityfocus.com/archive/1/4.3.2.7.2.20010629095801.0c3e6a70%40brussels.cisco.com
- http://www.cisco.com/warp/public/707/IOS-httplevel-pub.html
- http://www.securityfocus.com/archive/1/20010703011650.60515.qmail%40web14910.mail.yahoo.com
- http://www.securityfocus.com/archive/1/1601227034.20010702112207%40olympos.org
- http://www.osvdb.org/578
- http://www.securityfocus.com/archive/1/Pine.LNX.3.96.1010702134611.22995B-100000%40Lib-Vai.lib.asu.edu
- http://www.ciac.org/ciac/bulletins/l-106.shtml
- http://www.securityfocus.com/bid/2936
- https://exchange.xforce.ibmcloud.com/vulnerabilities/6749
Detection Context
Request patterns and scanner artifacts observed for this CVE. Operational detection logic guidance is coming soon.
Scanner Artifacts
Nuclei and Metasploit references linked to this CVE.
| Scanner | Reference | Detected |
|---|---|---|
| Nuclei | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2001/CVE-2001-0537.yaml | Apr 25, 2025 |
CVSS Scores
AV:N/AC:M/Au:N/C:C/I:C/A:C
Exploitation Status
Exploited in the wild
Recorded 2025-06-21 00:00:00 UTC · The Shadowserver (via CIRCL)
Proof of concept available
Recorded 2026-06-12 14:19:58 UTC · Nuclei Templates
Scanner Integrations
| Scanner | Reference | Detected |
|---|---|---|
| Nuclei | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2001/CVE-2001-0537.yaml | Apr 25, 2025 |
Potential Proof of Concepts
These PoCs are unverified and could contain malware. Use at your own risk.
nuclei · Created Unknown
Timeline
-
Proof of Concept Exploit Available
-
Added to KEVIntel
-
Detected by Nuclei
-
CVE Published to Public
-
CVE ID Reserved
Automate This Intelligence with the Pro API
Confidence scoring, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
Pro API Example
GET /api/v1/pro/kevs/CVE-2001-0537
{
"cve_id": "CVE-2001-0537",
"title": "HTTP server for Cisco IOS 11.3 to 12.2 allows attackers to bypass authenticat...",
"affected_vendor": "Cisco",
"affected_product": "IOS",
"confidence": "Medium",
"cvss_score": 9.3,
"epss_score": null,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "...": "Pro API fields" },
"proof_of_concepts": [ "..." ],
"scanner_integrations": [ "..." ]
}