CVE-2019-11766
CRITICALCVSS 9.8/10EPSS 2.10%
Last modified
CVE-2019-11766 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. dhcp6.c in dhcpcd before 6.11.7 and 7.x before 7.2.2 has a buffer over-read in the D6_OPTION_PD_EXCLUDE feature.. EPSS estimates a 2.10% chance of exploitation in the next 30 days.
Description
dhcp6.c in dhcpcd before 6.11.7 and 7.x before 7.2.2 has a buffer over-read in the D6_OPTION_PD_EXCLUDE feature.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Dhcpcd Project | Dhcpcd | < 6.11.7 |
| Dhcpcd Project | Dhcpcd | >= 7.0.0, < 7.2.2 |
| Debian | Debian Linux | 8.0 |
| Debian | Debian Linux | 9.0 |
| Debian | Debian Linux | 10.0 |
References
- http://www.securityfocus.com/bid/108172Broken Link
- https://bugs.debian.org/928440Mailing List, Patch, Third Party Advisory
- https://roy.marples.name/archives/dhcpcd-discuss/0002428.htmlPatch, Vendor Advisory
- https://roy.marples.name/cgit/dhcpcd.git/commit/?h=dhcpcd-7&id=896ef4a54b0578985e5e1360b141593f1d62837bMailing List, Patch, Vendor Advisory
- https://roy.marples.name/cgit/dhcpcd.git/commit/?h=dhcpcd-7&id=c1ebeaafeb324bac997984abdcee2d4e8b61a8a8Mailing List, Patch, Vendor Advisory
- http://www.securityfocus.com/bid/108172Broken Link
- https://bugs.debian.org/928440Mailing List, Patch, Third Party Advisory
- https://roy.marples.name/archives/dhcpcd-discuss/0002428.htmlPatch, Vendor Advisory
- https://roy.marples.name/cgit/dhcpcd.git/commit/?h=dhcpcd-7&id=896ef4a54b0578985e5e1360b141593f1d62837bMailing List, Patch, Vendor Advisory
- https://roy.marples.name/cgit/dhcpcd.git/commit/?h=dhcpcd-7&id=c1ebeaafeb324bac997984abdcee2d4e8b61a8a8Mailing List, Patch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2019-11766?
dhcp6.c in dhcpcd before 6.11.7 and 7.x before 7.2.2 has a buffer over-read in the D6_OPTION_PD_EXCLUDE feature.
How severe is CVE-2019-11766?
CVE-2019-11766 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.10% probability of exploitation in the next 30 days.
How do I fix CVE-2019-11766?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2019-11766?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST