Medium severity · published Nov 20, 2025
CVE-2025-62875
An Improper Check for Unusual or Exceptional Conditions vulnerability in OpenSMTPD allows local users to crash OpenSMTPD
5.5
CVSS
0.2%
EPSS
No
On KEV
Description
An Improper Check for Unusual or Exceptional Conditions vulnerability in OpenSMTPD allows local users to crash OpenSMTPD.
This issue affects openSUSE Tumbleweed: from ? before 7.8.0p0-1.1.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 9% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
Opensmtpd · Opensmtpd
7.7.0 · source: NVD
TU
Tumbleweed · Opensuse
before 7.8.0p0-1.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-62875
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-62875
Issue Tracking
https://bugzilla.suse.com/show_bug.cgi?id=CVE-2025-62875
Exploit
https://security.opensuse.org/2025/10/31/opensmtpd-local-DoS.html
Exploit
http://www.openwall.com/lists/oss-security/2025/10/31/3
Exploit
https://security.opensuse.org/2025/10/31/opensmtpd-local-DoS.html#reproducer
More from Opensmtpd
9.8
CVE-2020-8794
OpenSMTPD before 6.6.4 allows remote code execution because of an out-of-bounds read in mta_io in mta_session.c for multi-line replies
7.8
CVE-2023-29323
ascii_load_sockaddr in smtpd in OpenBSD before 7.1 errata 024 and 7.2 before errata 020, and OpenSMTPD Portable before 7.0.0-portable commit f748277, can abort upon a connection…
7.5
CVE-2020-35680
smtpd/lka_filter.c in OpenSMTPD before 6.8.0p1, in certain configurations, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a…
7.5
CVE-2020-35679
smtpd/table.c in OpenSMTPD before 6.8.0p1 lacks a certain regfree, which might allow attackers to trigger a "very significant" memory leak via messages to an instance that…
4.7
CVE-2020-8793
OpenSMTPD before 6.6.4 allows local users to read arbitrary files (e.g., on some Linux distributions) because of a combination of an untrusted search path in makemap.c and race…