CVE-2015-5309

MediumCVSS 4.3/10Last modified Jun 17, 2026

Description

Integer overflow in the terminal emulator in PuTTY before 0.66 allows remote attackers to cause a denial of service (memory corruption) or possibly execute arbitrary code via an ECH (erase characters) escape sequence with a large parameter value, which triggers a buffer underflow.

Metrics

CVSS 2.0 4.3/10AV:N/AC:M/Au:N/C:N/I:N/A:P

Weakness enumeration

CWE-189

Affected software

No affected versions have been published.

Timeline

Published
Dec 7, 2015
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2015-5309: Medium severity, CVSS 4.3 | Vulnix