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7.5
HIGH CVSS 3.1
CVE-2026-0915
getnetbyaddr and getnetbyaddr_r leak stack contents to DNS resovler
Description

Calling getnetbyaddr or getnetbyaddr_r with a configured nsswitch.conf that specifies the library's DNS backend for networks and queries for a zero-valued network in the GNU C Library version 2.0 to version 2.42 can leak stack contents to the configured DNS resolver.

INFO

Published Date :

Jan. 15, 2026, 10:16 p.m.

Last Modified :

Jan. 23, 2026, 7:36 p.m.

Remotely Exploit :

Yes !

Source :

3ff69d7a-14f2-4f67-a097-88dee7810d18
Affected Products

The following products are affected by CVE-2026-0915 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Gnu glibc
: Total Affected Vendor : 1 | Products : 1
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 HIGH 134c704f-9b21-4f2e-91b3-4a467353bcc0
Solution
Update the GNU C Library to a version that resolves the stack content leak vulnerability.
  • Update the GNU C Library to a non-vulnerable version.
  • Verify the nsswitch.conf configuration.
Public PoC/Exploit Available at Github

CVE-2026-0915 has a 1 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2026-0915.

URL Resource
https://sourceware.org/bugzilla/show_bug.cgi?id=33802 Broken Link
http://www.openwall.com/lists/oss-security/2026/01/16/6 Mailing List
https://sourceware.org/bugzilla/show_bug.cgi?id=33802 Broken Link
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-0915 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-0915 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

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venslabs/vens

Context-Aware Vulnerability Risk Scoring

Makefile Go Shell

Updated: 4 days, 7 hours ago
2 stars 2 fork 2 watcher
Born at : Nov. 5, 2025, 3:34 p.m. This repo has been linked 2 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-0915 vulnerability anywhere in the article.

  • Daily CyberSecurity
Decades-Old Flaw & New Heap Corruption: Critical glibc Bugs Revealed

The maintainers of the GNU C Library (glibc), the core library that underpins the vast majority of Linux-based systems, have disclosed details on two security vulnerabilities ranging from high-severit ... Read more

Published Date: Jan 19, 2026 (2 weeks, 3 days ago)

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2026-0915 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • Initial Analysis by [email protected]

    Jan. 23, 2026

    Action Type Old Value New Value
    Added CPE Configuration OR *cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:* versions from (including) 2.0 up to (including) 2.42
    Added Reference Type GNU C Library: https://sourceware.org/bugzilla/show_bug.cgi?id=33802 Types: Broken Link
    Added Reference Type CISA-ADP: https://sourceware.org/bugzilla/show_bug.cgi?id=33802 Types: Broken Link
    Added Reference Type CVE: http://www.openwall.com/lists/oss-security/2026/01/16/6 Types: Mailing List
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Jan. 20, 2026

    Action Type Old Value New Value
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
    Added Reference https://sourceware.org/bugzilla/show_bug.cgi?id=33802
  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Jan. 16, 2026

    Action Type Old Value New Value
    Added Reference http://www.openwall.com/lists/oss-security/2026/01/16/6
  • New CVE Received by 3ff69d7a-14f2-4f67-a097-88dee7810d18

    Jan. 15, 2026

    Action Type Old Value New Value
    Added Description Calling getnetbyaddr or getnetbyaddr_r with a configured nsswitch.conf that specifies the library's DNS backend for networks and queries for a zero-valued network in the GNU C Library version 2.0 to version 2.42 can leak stack contents to the configured DNS resolver.
    Added CWE CWE-908
    Added Reference https://sourceware.org/bugzilla/show_bug.cgi?id=33802
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 7.5
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact