CVE-2026-4892
HIGHCVSS 8.4/10EPSS 0.81%
Last modified
CVE-2026-4892 is a high-severity vulnerability rated 8.4/10 on the CVSS scale. A heap-based out-of-bounds write vulnerability in the DHCPv6 implementation of dnsmasq allows local attackers to execute arbitrary code with root privileges via a crafted DHCPv6 packet.. EPSS estimates a 0.81% chance of exploitation in the next 30 days.
Description
A heap-based out-of-bounds write vulnerability in the DHCPv6 implementation of dnsmasq allows local attackers to execute arbitrary code with root privileges via a crafted DHCPv6 packet.
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| dnsmasq | dnsmasq | < 2.92rel2 |
References
Timeline
- Published
- Last Modified
- Status
- Awaiting Analysis
Frequently Asked Questions
What is CVE-2026-4892?
A heap-based out-of-bounds write vulnerability in the DHCPv6 implementation of dnsmasq allows local attackers to execute arbitrary code with root privileges via a crafted DHCPv6 packet.
How severe is CVE-2026-4892?
CVE-2026-4892 has a CVSS score of 8.4/10 (HIGH severity). The EPSS model estimates a 0.81% probability of exploitation in the next 30 days.
How do I fix CVE-2026-4892?
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.
Related CVEs from 2026
- CVE-2026-48913Use After Free vulnerability in Apache HTTP Server module mo…7.3
- CVE-2026-48914A flaw was found in QEMU's virtio-blk device. The issue aris…6.7
- CVE-2026-48916Jenkins LDAP Plugin 807.v7d7de30930cf and earlier follows LD…6.6
- CVE-2026-48917Jenkins LDAP Plugin 807.v7d7de30930cf and earlier deserializ…6.6
- CVE-2026-48918Jenkins Active Directory Plugin 2.41 and earlier follows LDA…6.6
- CVE-2026-48919Jenkins Active Directory Plugin 2.41 and earlier deserialize…6.6
- CVE-2026-48920Jenkins Email Extension Plugin 1933.v45cec755423f and earlie…8.8
- CVE-2026-48921Jenkins Pipeline: Groovy Libraries Plugin 797.v90ea_a_9b_e45…7.5
- CVE-2026-48922Jenkins Credentials Binding Plugin 720.v3f6decef43ea_ and ea…7.5
- CVE-2026-48923Jenkins AppSpider Plugin 1.0.17 and earlier does not perform…4.3
- CVE-2026-48924Jenkins Bitbucket OAuth Plugin 0.17 and earlier does not res…4.3
- CVE-2026-48925A cross-site request forgery (CSRF) vulnerability in Jenkins…4.3
Are you affected by CVE-2026-4892?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST