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CVE-2026-0915

29
FAUCET Score

CVE-2026-0915 is a high-severity vulnerability affecting GNU C Library versions 2.0 to 2.42, where calling getnetbyaddr or getnetbyaddr_r with a specific nsswitch.conf configuration and a zero-valued network query can leak stack contents to a DNS resolver. This vulnerability has a CVSS score of 7.5, indicating a high potential for impact due to its network-based attack vector and low attack complexity, leading to a high confidentiality impact. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion beyond a single mention.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.0, <= 2.42CPE match
cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.56%
Probability of exploitation in next 30 days
EPSS Percentile
43.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0056 is in the 21st percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (13)

microsoftpatch availablevia msrc
Product: 20895-17084Fixed in: 2.38-18
microsoftpatch availablevia msrc
Product: cbl2 glibc 2.35-9 on CBL Mariner 2.0Fixed in: 2.35-9
microsoftpatch availablevia msrc
Product: azl3 glibc 2.38-18 on Azure Linux 3.0Fixed in: 2.38-18
microsoftpatch availablevia msrc
Product: 20868-17086Fixed in: 2.35-9
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 10Fixed in: glibc-0:2.39-58.el10_1.7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: glibc-0:2.34-231.el9_7.10
View patch
redhatpatch availablevia redhat_api
Product: Cost Management 4Fixed in: costmanagement/costmanagement-metrics-rhel9-operator:sha256:7424ae28625701b1441987b0457100505e273b2cbcb087bf0c046d7b2cc596c7
View patch
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: glibc
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift Container Platform 4Fixed in: rhcos
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: glibc
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: compat-glibc
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: glibc
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: compat-glibc

Vendor Advisories (2)

redhatCVE-2026-0915Moderate

glibc: glibc: Information disclosure via zero-valued network query

Jan 15, 2026
microsoft2026-Jan/CVE-2026-0915Low

getnetbyaddr and getnetbyaddr_r leak stack contents to DNS resovler

Jan 13, 2026

References

sourceware.org / bugzilla/show_bug.cgi
Broken Link
openwall.com / lists/oss-security/2026/01/16/6
Mailing List