High 7.5Published Jan 15, 2026

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

Updated under an hour ago (Oct 27, 2026, 9:30 PM ET)

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It affects The GNU C Library glibc and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for The GNU C Library glibc

Exploited in the last 30 days

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.

CVSS: 7.5 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness (CWE): CWE-908
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: glibc
NVD analysis: Analyzed
Record last updated: Jan 20, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

The GNU C Library glibc gnu_c_library:glibc (from the name)	from 2.0 through 2.42	CNA record
gnu glibc gnu:glibc	from 2.0 through 2.42	NVD

References

References

https://sourceware.org/bugzilla/show_bug.cgi?id=33802	broken-link
http://www.openwall.com/lists/oss-security/2026/01/16/6	mailing-list

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.