OpenSMTPD 7.7.0 Unix Domain Socket smtpd.sock memory leak

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.3$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in OpenSMTPD 7.7.0. This issue affects some unknown processing of the file smtpd.sock of the component Unix Domain Socket Handler. Such manipulation leads to memory leak. This vulnerability is traded as CVE-2025-62875. An attack has to be approached locally. There is no exploit available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability was found in OpenSMTPD 7.7.0. It has been rated as problematic. Affected by this issue is an unknown functionality of the file smtpd.sock of the component Unix Domain Socket Handler. The manipulation with an unknown input leads to a memory leak vulnerability. Using CWE to declare the problem leads to CWE-401. The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. Impacted is availability. CVE summarizes:

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.

The advisory is shared for download at seclists.org. This vulnerability is handled as CVE-2025-62875. The exploitation is known to be easy. The attack needs to be approached locally. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 272160 (Linux Distros Unpatched Vulnerability : CVE-2025-62875), which helps to determine the existence of the flaw in a target environment.

Applying a patch is able to eliminate this problem.

The vulnerability is also documented in the vulnerability database at Tenable (272160). Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.3

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Memory leak
CWE: CWE-401 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 272160
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-62875

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Timelineinfo

10/31/2025 Advisory disclosed
10/31/2025 +0 days VulDB entry created
01/15/2026 +76 days VulDB entry last update

Sourcesinfo

Advisory: seclists.org
Status: Confirmed

CVE: CVE-2025-62875 (🔒)
GCVE (CVE): GCVE-0-2025-62875
GCVE (VulDB): GCVE-100-330884

Entryinfo

Created: 10/31/2025 23:04
Updated: 01/15/2026 21:47
Changes: 10/31/2025 23:04 (51), 11/01/2025 17:54 (2), 11/21/2025 09:19 (13), 01/15/2026 21:47 (11)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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