CVE-2023-46840
MEDIUMCVSS 4.1/10EPSS 0.26%
Last modified
CVE-2023-46840 is a medium-severity vulnerability rated 4.1/10 on the CVSS scale. Incorrect placement of a preprocessor directive in source code results in logic that doesn't operate as intended when support for HVM guests is compiled out of Xen. . EPSS estimates a 0.26% chance of exploitation in the next 30 days.
Description
Incorrect placement of a preprocessor directive in source code results in logic that doesn't operate as intended when support for HVM guests is compiled out of Xen.
Metrics
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Xen | Xen | >= 4.17 |
| Fedoraproject | Fedora | 39 |
References
- https://xenbits.xenproject.org/xsa/advisory-450.htmlPatch, Vendor Advisory
- http://xenbits.xen.org/xsa/advisory-450.htmlPatch, Vendor Advisory
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XLL6SQ6IKFYXLYWITYZCRV5IBRK5G35R/Mailing List, Third Party Advisory
- https://xenbits.xenproject.org/xsa/advisory-450.htmlPatch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2023-46840?
Incorrect placement of a preprocessor directive in source code results
in logic that doesn't operate as intended when support for HVM guests is
compiled out of Xen.
How severe is CVE-2023-46840?
CVE-2023-46840 has a CVSS score of 4.1/10 (MEDIUM severity). The EPSS model estimates a 0.26% probability of exploitation in the next 30 days.
How do I fix CVE-2023-46840?
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-2023-46840?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST