CVE-2018-9129 json
ZyXEL ZyWALL/USG series devices have a Bleichenbacher vulnerability in their Internet Key Exchange (IKE) handshake implementation used for…
published 2018-08-15 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-20729
- cvss
- 5.9
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.0%
- EPSS 1.0% chance of exploitation in 30 days, percentile 61%
- public exploits
- 0
- none known
Summary
ZyXEL ZyWALL/USG series devices have a Bleichenbacher vulnerability in their Internet Key Exchange (IKE) handshake implementation used for IPsec based VPN connections.
Patch / fix
Exploit prediction
0.97% chance of exploitation in the next 30 days, higher than 61% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 5.9 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:P/A:N |
References
-
zyxel.com
/support/bleichenbacher_attack_vulnerability.shtml
patch, vendor-advisory
-
web-in-security.blogspot.com
/2018/08/practical-bleichenbacher-attacks-on-ipsec-ike.html
third-party-advisory
Sources
- CVE List CVE-2018-9129
- NVD CVE-2018-9129
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