CVE-2013-4208

CVE-2013-4208 is a low-severity vulnerability in Putty with a CVSS 2.0 base score of 2.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-200.

Key facts

Description

The rsa_verify function in PuTTY before 0.63 (1) does not clear sensitive process memory after use and (2) does not free certain structures containing sensitive process memory, which might allow local users to discover private RSA and DSA keys.

Frequently asked questions

What is CVE-2013-4208?
The rsa_verify function in PuTTY before 0.63 (1) does not clear sensitive process memory after use and (2) does not free certain structures containing sensitive process memory, which might allow local users to discover private RSA and DSA keys.
How severe is CVE-2013-4208?
CVE-2013-4208 has a CVSS 2.0 base score of 2.1, rated low severity.
Is CVE-2013-4208 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-4208?
CVE-2013-4208 primarily affects Putty. In total, 19 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-4208?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2013-4208 published?
CVE-2013-4208 was published on 2013-08-19 and last updated on 2026-06-16.

References

Affected products (19)

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