VULNERABILITY INTELLIGENCE

CVE-2015-5309

CVSS score4.3 MEDIUM
EPSS probability3.47%
CISA KEVNot currently listed
Published2015-12-07
Last modified2026-06-17
CVSS vectorAV:N/AC:M/Au:N/C:N/I:N/A:P

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.

Primary references