CVE-2025-62875: An Improper Check for Unusual or Exceptional Conditions vulnerability in OpenSMTPD allows local users to crash

Q: How do I fix CVE-2025-62875?

opensmtpd: downgrade or apply the listed mitigation; tumbleweed: upgrade to 7.8.0p0-1.1. Exact commands for each OS are on this page.

Q: Is CVE-2025-62875 being exploited?

CVE-2025-62875 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2025-62875 affect?

CVE-2025-62875 affects opensmtpd, tumbleweed. Severity is medium (CVSS 5.5). 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.

Q: How urgent is CVE-2025-62875?

Priority 26/100. Public exploit reference

Routine

MEDIUM 5.5DOWNGRADEUPGRADE

CVE-2025-62875 is a medium-severity flaw (CVSS 5.5) affecting opensmtpd, tumbleweed. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	5.5 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 91%)
CISA exploited list	No
Weakness	CWE-754
Published	2025-11-20
Last modified	2026-10-18

Publisher (CNA): SUSE · Vendor: opensmtpd · opensuse

Last updated 2026-10-18 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-11-20 16:16 UTCPublished CVE record published
2026-10-18 20:10 UTCUpdated Record last modified

opensmtpd opensmtpd DOWNGRADE

Affected: 7.7.0 p0

Fixed in: no fixed release known

Safe to downgrade to: a release before 7.7.0

1. Check installed version

apt-cache policy opensmtpd || rpm -q opensmtpd || opensmtpd --version

2. No fixed release: DOWNGRADE to a release before 7.7.0 (Debian / Ubuntu)

apt-cache madison opensmtpd sudo apt install opensmtpd=<VERSION_BEFORE_7.7.0> sudo apt-mark hold opensmtpd

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list opensmtpd sudo dnf downgrade opensmtpd-<VERSION_BEFORE_7.7.0> sudo dnf versionlock add opensmtpd

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

opensuse tumbleweed UPGRADE

Affected: < 7.8.0p0-1.1

Fixed in: 7.8.0p0-1.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy tumbleweed || rpm -q tumbleweed || tumbleweed --version

2. UPGRADE to 7.8.0p0-1.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade tumbleweed

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade tumbleweed

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-62875?

opensmtpd: downgrade or apply the listed mitigation; tumbleweed: upgrade to 7.8.0p0-1.1. Exact commands for each OS are on this page.

Is CVE-2025-62875 being exploited?

CVE-2025-62875 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-62875 affect?

CVE-2025-62875 affects opensmtpd, tumbleweed. Severity is medium (CVSS 5.5). 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.

How urgent is CVE-2025-62875?

Priority 26/100. Public exploit reference

References

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