NULL pointer dereference in Zyxel Atp100
CVE-2023-6397
A null pointer dereference vulnerability in Zyxel ATP series firmware versions from 4.32 through 5.37 Patch 1 and USG FLEX series firmware versions from 4.50 through 5.37 Patch 1 could allow a LAN-based attacker to cause denial-of-service (DoS) conditions by downloading a crafted RAR compressed file onto a LAN-side host if the firewall has the “Anti-Malware” feature enabled.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.003 (21.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 21.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Zyxel Atp100
- Zyxel Atp100 Firmware — versions 5.37
- Zyxel Atp100w
- Zyxel Atp100w Firmware — versions 5.37
- Zyxel Atp200
- Zyxel Atp200 Firmware — versions 5.37
- Zyxel Atp500
- Zyxel Atp500 Firmware — versions 5.37
- Zyxel Atp700
- Zyxel Atp700 Firmware — versions 5.37
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for… (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2023-6397?
- CVE-2023-6397 is a medium-severity vulnerability in Zyxel Atp100, classified under NULL Pointer Dereference. CVSS score: 6.5/10. Published 2024-02-20.
- How severe is CVE-2023-6397?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2023-6397 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.