What’s Vulnerable › Vulnerabilities

CVE-2011-4607

• Severity: low (CVSS 2.1 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2013-08-23 · updated 2026-06-16
• Weakness: CWE-119

Description

PuTTY 0.59 through 0.61 does not clear sensitive process memory when managing user replies that occur during keyboard-interactive authentication, which might allow local users to read login passwords by obtaining access to the process' memory.

Affected products

• PuTTY: 0.59, 0.60, 0.61

References

• http://seclists.org/oss-sec/2011/q4/499
• http://seclists.org/oss-sec/2011/q4/500
• http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/password-not-wiped.html
• http://seclists.org/oss-sec/2011/q4/499
• http://seclists.org/oss-sec/2011/q4/500
• http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/password-not-wiped.html

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