CVE-2026-120830
Last modified
CVE-2026-120830 is a high-severity vulnerability rated 7.4/10 on the CVSS scale. A flaw was found in libslirp in icmp_forward_error(). When building an ICMP error response, the length of the quoted original IPv4 packet was taken from the IP header without clamping it to the actual buffer length. EPSS estimates a 0.22% chance of exploitation in the next 30 days.
Description
A flaw was found in libslirp in icmp_forward_error(). When building an ICMP error response, the length of the quoted original IPv4 packet was taken from the IP header without clamping it to the actual buffer length. A truncated or malformed packet could cause an out-of-bounds heap read, leaking host memory into the ICMP error packet returned to a guest or container.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 | All versions |
| Red Hat | Red Hat Enterprise Linux 8 | All versions |
| Red Hat | Red Hat Enterprise Linux 9 | All versions |
| Red Hat | Red Hat OpenShift Container Platform 4 | All versions |
| Red Hat | Red Hat OpenShift Container Platform 5 | All versions |
References
Timeline
- Published
- Last Modified
- Status
- Awaiting Analysis
Frequently Asked Questions
What is CVE-2026-120830?
How severe is CVE-2026-120830?
How do I fix CVE-2026-120830?
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-2026-12079The Dokan Pro plugin for WordPress is vulnerable to time-bas…6.5
- CVE-2026-1208The Friendly Functions for Welcart plugin for WordPress is v…4.3
- CVE-2026-12080A flaw was found in the QEMU Guest Agent (qga). A local unpr…7.3
- CVE-2026-12081The Database for Contact Form 7, WPforms, Elementor forms Wo…5
- CVE-2026-12082The Praison AI SEO WordPress plugin before 5.0.7 does not pe…7.5
- CVE-2026-12083The Admin and Site Enhancements (ASE) WordPress plugin befor…8.1
- CVE-2026-120831A flaw was found in libslirp in if_output(). When moving a s…6.5
- CVE-2026-120833labbench before 0.46.1 contains a deserialization of untrust…7.8
- CVE-2026-12084IBM UCD - IBM DevOps Deploy 8.1 through 8.1.2.6, and 8.2 thr…7.5
- CVE-2026-120843Improper Neutralization of Input During Web Page Generation …6.5
- CVE-2026-120846Missing Authorization vulnerability in Uncanny Owl Uncanny A…5.3
- CVE-2026-12085IBM UCD - IBM UrbanCode Deploy 7.3 through 7.3.2.18 and IBM …6.5
Are you affected by CVE-2026-120830?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST