CVSS 3.0
6.5 mediumCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:NCVE-2016-0772
Medium (6.5) in python python. EPSS 15% chance of exploitation in the next 30 days.
The smtplib library in CPython (aka Python) before 2.7.12, 3.x before 3.4.5, and 3.5.x before 3.5.2 does not return an error when StartTLS fails, which might allow man-in-the-middle attackers to bypass the TLS protections by leveraging a network position between the client and the registry to block the StartTLS command, aka a "StartTLS stripping attack."
Severity
- EPSS
- 15% chance of exploitation in the next 30 days; higher than 96% of CVEs (scores of 2026-10-31)
- CWE
- CWE-693
- Published
- Modified
- Record from
- the NVD, synced
Affected
- python:python