CVE-2023-4398
Last modified
CVE-2023-4398 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. An integer overflow vulnerability in the source code of the QuickSec IPSec toolkit used in the VPN feature of the Zyxel ATP series firmware versions 4.32 through 5.37, USG FLEX series firmware versions 4.50 through 5.37, USG FLEX 50(W) series firmware versions 4.16 through 5.37, USG20(W)-VPN series firmware versions 4.16 through 5.37, and VPN series firmware versions 4.30 through 5.37, could allow an unauthenticated attacker to cause denial-of-service (DoS) conditions on an affected device by sending a crafted IKE packet.. EPSS estimates a 0.88% chance of exploitation in the next 30 days.
Description
An integer overflow vulnerability in the source code of the QuickSec IPSec toolkit used in the VPN feature of the Zyxel ATP series firmware versions 4.32 through 5.37, USG FLEX series firmware versions 4.50 through 5.37, USG FLEX 50(W) series firmware versions 4.16 through 5.37, USG20(W)-VPN series firmware versions 4.16 through 5.37, and VPN series firmware versions 4.30 through 5.37, could allow an unauthenticated attacker to cause denial-of-service (DoS) conditions on an affected device by sending a crafted IKE packet.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Zyxel | Zld | >= 4.32, <= 5.37 |
| Zyxel | Zld | >= 4.50, <= 5.37 |
| Zyxel | Zld | >= 4.16, <= 5.37 |
| Zyxel | Zld | >= 4.30, <= 5.37 |
References
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2023-4398?
How severe is CVE-2023-4398?
How do I fix CVE-2023-4398?
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 2023
- CVE-2023-43961An issue in Dromara SaToken version 1.3.50RC and before when…8.8
- CVE-2023-43962Cross Site Scripting vulnerability in Xunrui CMS Public Edit…4.8
- CVE-2023-4397A buffer overflow vulnerability in the Zyxel ATP series firm…4.4
- CVE-2023-43971Cross Site Scripting vulnerability in ACG-faka v1.1.7 allows…6.1
- CVE-2023-43976An issue in CatoNetworks CatoClient before v.5.4.0 allows at…8.1
- CVE-2023-43979ETS Soft ybc_blog before v4.4.0 was discovered to contain a …9.8
- CVE-2023-43980Presto Changeo testsitecreator up to v1.1.1 was discovered t…9.8
- CVE-2023-43981Presto Changeo testsitecreator up to 1.1.1 was discovered to…9.8
- CVE-2023-43982Bon Presta boninstagramcarousel between v5.2.1 to v7.0.0 was…9.8
- CVE-2023-43983Presto Changeo attributegrid up to 2.0.3 was discovered to c…9.8
- CVE-2023-43984Insecure permissions in Smart Soft advancedexport before v4.…7.5
- CVE-2023-43985SunnyToo stblogsearch up to v1.0.0 was discovered to contain…9.8
Are you affected by CVE-2023-4398?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST