What’s Vulnerable › Vulnerabilities

CVE-1999-1100

• Severity: high (CVSS 7.5 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 1999-12-31 · updated 2026-06-16

Description

Cisco PIX Private Link 4.1.6 and earlier does not properly process certain commands in the configuration file, which reduces the effective key length of the DES key to 48 bits instead of 56 bits, which makes it easier for an attacker to find the proper key via a brute force attack.

Affected products

• Cisco Pix Private Link: through 4.1\(6\)

References

• http://ciac.llnl.gov/ciac/bulletins/i-056.shtml
• http://www.cisco.com/warp/public/770/pixkey-pub.shtml
• https://exchange.xforce.ibmcloud.com/vulnerabilities/1579
• http://ciac.llnl.gov/ciac/bulletins/i-056.shtml
• http://www.cisco.com/warp/public/770/pixkey-pub.shtml
• https://exchange.xforce.ibmcloud.com/vulnerabilities/1579

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