CVE-2019-10691: dovecot
CVSS: 7.5v3.0HighModified
AliasesALPINE-CVE-2019-10691SUSE-SU-2019:0997-1UBUNTU-CVE-2019-10691DEBIAN-CVE-2019-10691openSUSE-SU-2019:1312-1
Published 24-04-2019Last modified 04-08-2024
Vulnerability summary
CVE-2019-10691 is a high (CVSS 7.5) vulnerability in dovecot. EPSS estimates a 2.80% chance of exploitation in the next 30 days, higher than 86.3% of scored vulnerabilities.
CVSS score
7.5/10
010
High · v3.0 (NVD)EPSS score
2.80%
0%100%
Low · +0.21 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 2 · Related 2Timeline
- 24-04-2019PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
The JSON encoder in Dovecot before 2.3.5.2 allows attackers to repeatedly crash the authentication service by attempting to authenticate with an invalid UTF-8 sequence as the username.
CVSS metrics
5 scores · 4 sources · 2 versionsHigh 7.5Preferred score · NVD (NIST)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HSourcesAll 4 agree
- OSV · AlpineEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Medium 5.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:N/I:N/A:PSourcesSingle source
EPSS trend
Probability
2.80%
Chance of exploitation in the next 30 days
Percentile
86%
Versus all other CVEs
30-day change
+0.21 pp
From 2.59% on 21-09-2026
21-09-202621-10-2026
EPSS score2.80%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Opensuse2 products
- leapEOL15.0
- dovecot23&distro=openSUSE Leap 15.0< 2.3.3-lp150.11.1
Alpine1 product
- dovecot< 2.3.6-r0
Debian1 product
- dovecot< 1:2.3.4.1-4
Dovecot1 product
- dovecot< 2.3.5.2
Suse1 product
- dovecot23&distro=SUSE Linux Enterprise Module for Server Applications 15< 2.3.3-4.13.1
Ubuntu1 product
- dovecot< 1:2.2.9-1ubuntu2.6 | < 1:2.2.22-1ubuntu2.10 | < 1:2.2.33.2-1ubuntu4.3
6 vendors · 7 products
References
14 links- dovecot.org/list/dovecot-news/2019-April/000406.htmlMailing ListX Refsource MLISTVendor AdvisoryREPORT
- lists.opensuse.org/opensuse-security-announce/2019-05/msg00000.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
Show all 14 references
- lists.opensuse.org/archives/…Advisory