dhcpcd before 7.2.1 contains a buffer overflow in dhcp6_findna in dhcp6.c when reading NA/TA addresses.
CVE-2019-11577
CRITICALNVD 9.89.8—Elevated
EchelonGraph scoreMEDIUM confidence
Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-24. NVD baseline CVSS 9.8; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
- High exploitation likelihood — EPSS 53%
CISA-KEV: Not listedEPSS: 53%CVSS: 9.8Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 9.8
- EG Score
- 9.8(medium)
- EPSS
- 98.9%
- KEV
- Not listed
Published
April 28, 2019
Last Modified
November 21, 2024
Advisory Details (1)
Auto-updated May 27, 2026No patch confirmed yet.
Frequently asked(5)
What is CVE-2019-11577?
CVE-2019-11577 is a critical vulnerability published on April 28, 2019. dhcpcd before 7.2.1 contains a buffer overflow in dhcp6_findna in dhcp6.c when reading NA/TA addresses.
When was CVE-2019-11577 disclosed?
CVE-2019-11577 was first published in the National Vulnerability Database on April 28, 2019, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2019-11577 actively exploited?
CVE-2019-11577 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 98.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2019-11577?
CVE-2019-11577 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2019-11577?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-11577, 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.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2019-11577
Is Your Infrastructure Affected by CVE-2019-11577?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.