CVE-2026-0915 | getnetbyaddr and getnetbyaddr_r leak stack contents to DNS resovler

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.

Published: 2026-01-15 Last update: 2026-06-17 Assigner: 3ff69d7a-14f2-4f67-a097-88dee7810d18 Source: 3ff69d7a-14f2-4f67-a097-88dee7810d18
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-0915 is rated Moderate Risk (45.3/100): CVSS High severity, with low exploitation likelihood (EPSS 0.56%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-0915

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.02% 0.56% +0.55%
2 2026-01-16 — 0.02% —

Full EPSS history (2 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-0915

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 3.6 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2026-0915

OS Trackers for CVE-2026-0915

vendor priority summary link
debian not yet assigned CVE-2026-0915 not yet assigned priority: Debian including 1 source packages (glibc), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2026-0915
redhat medium — https://access.redhat.com/security/cve/CVE-2026-0915
suse medium CVE-2026-0915 severity moderate: SUSE including 967 source package names (1.1.1-1.24:glibc-2.38-150600.14.40.1, 1.1.1-1.25:glibc-2.38-150600.14.40.1, …), 2036 product×package rows across 250 product lines (Container private-registry/harbor-core, Container private-registry/harbor-exporter, … (250 product lines)): Fixed 1792, Known Affected 231, First Fixed 13. https://www.suse.com/security/cve/CVE-2026-0915/
ubuntu medium CVE-2026-0915 medium priority: Ubuntu including 2 source packages (eglibc, glibc), 12 status rows across 8 suites (bionic, focal, jammy, noble, questing, trusty, upstream, xenial): released 7, DNE 3, needed 1, needs-triage 1. https://ubuntu.com/security/CVE-2026-0915

Affected software / configurations for CVE-2026-0915

Vendor Product Version Raw CPE
gnu glibc >= 2.0, <= 2.42 cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:*

References for CVE-2026-0915

cvelogic Threat Intelligence