Vulnerability · Published Dec 29, 2021 · Assigned by Zyxel
CVE-2021-35034
High 7.4
In plain English
A high-severity security flaw in NBG6604 series firmware from Zyxel. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 65% of all known vulnerabilities).
Severity (CVSS 3.1)7.4High
Exploit odds (30 days)1.1%top 34.8% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
An insufficient session expiration vulnerability in the CGI program of the Zyxel NBG6604 firmware could allow a remote attacker to access the device if the correct token can be intercepted.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Zyxel | NBG6604 series firmware | 1.00(ABIR.8)C0 |
Weakness: CWE-613 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N