CVE-2023-31130

MEDIUMNVD 4.14.1—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 4.1 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 69% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
4.1
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 4.1Exploit: NoneExposed: 0

A fix is available — apply it.

c-ares is an asynchronous resolver library. ares_inet_net_pton() is vulnerable to a buffer underflow for certain ipv6 addresses, in particular "0::00:00:00/2" was found to cause an issue. C-ares only uses this function internally for configuration purposes which would require an administrator to configure such an address via ares_set_sortlist(). However, users may externally use ares_inet_net_pton() for other purposes and thus be vulnerable to more severe issues. This issue has been fixed in 1.19.1.

CVSS v3
4.1
EG Score
4.1(medium)
EG Risk
—
EPSS
31.2%
KEV
Not listed

Published

May 25, 2023

Last Modified

February 13, 2025

References (16)

Patch Availability(13)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulibc-ares-dev (1.18.1-2ubuntu0.1) @ lunar2026-05-25ubuntu
ubuntulibc-ares2 (1.14.0-1ubuntu0.2+esm1) @ bionic2026-05-25ubuntu
redhatc-ares-0:1.13.0-6.el8_8.32023-11-28redhat
redhatc-ares-0:1.13.0-6.el8_6.22023-11-21redhat
redhatc-ares-0:1.13.0-9.el8_9.12023-11-14redhat
redhatc-ares-0:1.19.1-1.el92023-11-07redhat
redhatnodejs:16-8060020230620060944.ad008a3a2023-07-12redhat
redhatnodejs-1:16.18.1-4.el9_02023-07-12redhat
redhatrh-nodejs14-nodejs-0:14.21.3-4.el72023-07-12redhat
redhatnodejs:16-8080020230608150024.63b345852023-07-12redhat
redhatnodejs:18-8080020230607122508.63b345852023-07-12redhat
redhatnodejs-1:16.19.1-2.el9_22023-06-14redhat
redhatnodejs:18-9020020230531092345.rhel92023-06-14redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(14)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 13× in last 7d / 49× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 106 total refreshes for this CVE.

  1. 2026-07-22 23:09 UTCEG score recompute
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Frequently asked(5)

What is CVE-2023-31130?
CVE-2023-31130 is a medium vulnerability published on May 25, 2023. c-ares is an asynchronous resolver library. aresinetnetpton() is vulnerable to a buffer underflow for certain ipv6 addresses, in particular "0::00:00:00/2" was found to cause an issue. C-ares only uses this function internally for configuration purposes which would require an administrator to…
When was CVE-2023-31130 disclosed?
CVE-2023-31130 was first published in the National Vulnerability Database on May 25, 2023, with the most recent update on February 13, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-31130 actively exploited?
CVE-2023-31130 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 31.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2023-31130?
CVE-2023-31130 has a CVSS v3 base score of 4.1 (NVD).
How do I remediate CVE-2023-31130?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-31130, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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