PatchTheCVEglibc vulnerabilities and fixes
Recent CVEs affecting glibc, with upgrade or downgrade steps. 2 tracked.
glibc has 2 tracked vulnerabilities, 0 critical. A fixed release or vendor patch exists for 0. Most recent: 2026-04-28. Highest priority: CVE-2026-6238 (score 35/100).
- CVE-2026-6238 MEDIUM 6.5 MITIGATE The deprecated functions ns_printrrf, ns_printrr and fp_nquery in the GNU C Library version 2.0.1 to version 2
- CVE-2026-5435 HIGH 7.3 MITIGATE The deprecated functions ns_printrrf, ns_printrr and fp_nquery in the GNU C Library version 2.2 and newer fail
FAQ
How do I fix glibc vulnerabilities?
Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.
Is glibc being exploited right now?
None of the tracked glibc CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.
Which glibc CVE should I patch first?
CVE-2026-6238 currently ranks highest (35/100): The deprecated functions ns_printrrf, ns_printrr and fp_nquery in the GNU C Library version 2.0.1 to version 2.