5.9

CVE-2016-8652: dovecot Improper Input Validation

CVSS: 5.9v3.0MediumModified
AliasesDEBIAN-CVE-2016-8652
Published 16-02-2017Last modified 06-08-2024
Open JSON

Vulnerability summary

CVE-2016-8652 is a medium (CVSS 5.9) Improper Input Validation vulnerability in dovecot. EPSS estimates a 48.20% chance of exploitation in the next 30 days, higher than 98.8% of scored vulnerabilities.

Overall risk
33/100
0100
Medium · default modelHow is this calculated?
CVSS score
5.9/10
010
Medium · v3.0 (NVD)
EPSS score
48.20%
0%100%
High · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 16-02-2017
    PublishedVulnerability first disclosed.
  2. 06-08-2024
    Last modifiedVulnerability information updated.

Description

The auth component in Dovecot before 2.2.27, when auth-policy is configured, allows a remote attackers to cause a denial of service (crash) by aborting authentication without setting a username.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

48.20%

Chance of exploitation in the next 30 days

Percentile

99%

Versus all other CVEs

30-day change

0.00 pp

From 48.20% on 20-09-2026

20-09-202620-10-2026
EPSS score
48.20%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • dovecot< 1:2.2.27-1
Dovecot1 product

2 vendors · 2 products

References

5 links