CVE-2001-1183

NONECVSS 0.0

0.0

PPTP implementation in Cisco IOS 12.1 and 12.2 allows remote attackers to cause a denial of service (crash) via a malformed packet.

CVSS v3: —
EG Score: —
EPSS: 82.8%
KEV: Not listed

Published

July 12, 2001

Last Modified

April 16, 2026

References (10)

cve@mitrehttp://www.cisco.com/warp/public/707/PPTP-vulnerability-pub.html
cve@mitrehttp://www.kb.cert.org/vuls/id/656315
cve@mitrehttp://www.osvdb.org/802
cve@mitrehttp://www.securityfocus.com/bid/3022
cve@mitrehttps://exchange.xforce.ibmcloud.com/vulnerabilities/6835
af854a3a-2127-422b-91ae-364da2661108http://www.cisco.com/warp/public/707/PPTP-vulnerability-pub.html
af854a3a-2127-422b-91ae-364da2661108http://www.kb.cert.org/vuls/id/656315
af854a3a-2127-422b-91ae-364da2661108http://www.osvdb.org/802
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/3022
af854a3a-2127-422b-91ae-364da2661108https://exchange.xforce.ibmcloud.com/vulnerabilities/6835

Data Freshness Timeline

(refreshed 14× in last 7d / 20× 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.

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Frequently asked(4)

What is CVE-2001-1183?

CVE-2001-1183 is a none vulnerability published on July 12, 2001. PPTP implementation in Cisco IOS 12.1 and 12.2 allows remote attackers to cause a denial of service (crash) via a malformed packet.

When was CVE-2001-1183 disclosed?

CVE-2001-1183 was first published in the National Vulnerability Database on July 12, 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-2001-1183 actively exploited?

CVE-2001-1183 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 82.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-2001-1183?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2001-1183, 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.

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CVE-2001-1183

📅 Published

🔄 Last Modified

🔗 References (10)