What’s Vulnerable › Vulnerabilities

CVE-2001-1183

• Severity: medium (CVSS 5.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2001-07-12 · updated 2026-06-16

Description

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

Affected products

• Cisco IOS: 12.1e, 12.1ez, 12.1t, 12.1ya, 12.1yc, 12.1yd (+7)

References

• http://www.cisco.com/warp/public/707/PPTP-vulnerability-pub.html
• http://www.kb.cert.org/vuls/id/656315
• http://www.osvdb.org/802
• http://www.securityfocus.com/bid/3022
• https://exchange.xforce.ibmcloud.com/vulnerabilities/6835
• http://www.cisco.com/warp/public/707/PPTP-vulnerability-pub.html
• http://www.kb.cert.org/vuls/id/656315
• http://www.osvdb.org/802
• http://www.securityfocus.com/bid/3022
• https://exchange.xforce.ibmcloud.com/vulnerabilities/6835

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