7.8

CVE-2020-7046: dovecot Infinite Loop

CVSS: 7.8v2.0HighModified
AliasesALPINE-CVE-2020-7046
Published 12-02-2020Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2020-7046 is a high (CVSS 7.8) Infinite Loop vulnerability in dovecot. EPSS estimates a 51.26% chance of exploitation in the next 30 days, higher than 98.9% of scored vulnerabilities.

Overall risk
41/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v2.0 (NVD)
EPSS score
51.26%
0%100%
Critical · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 2
OPENSUSE-SU-2024:10726-1OPENSUSE-SU-2025:14715-1

Timeline

  1. 12-02-2020
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

lib-smtp in submission-login and lmtp in Dovecot 2.3.9 before 2.3.9.3 mishandles truncated UTF-8 data in command parameters, as demonstrated by the unauthenticated triggering of a submission-login infinite loop.

CVSS metrics

5 scores · 3 sources · 3 versions

EPSS trend

Probability

51.26%

Chance of exploitation in the next 30 days

Percentile

99%

Versus all other CVEs

30-day change

0.00 pp

From 51.26% on 20-09-2026

20-09-202620-10-2026
EPSS score
51.26%

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

Alpine1 product
  • dovecot≥ 2.3.9, < 2.3.10.1-r0 | ≥ 2.3.9, < 2.3.9.3-r0
Dovecot1 product
Fedoraproject1 product

3 vendors · 3 products

References

6 links