CVE-2021-35035

CVE-2021-35035 is a medium-severity vulnerability in Zyxel Nbg6604 Firmware with a CVSS 3.x base score of 4.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-312.

Key facts

Description

A cleartext storage of sensitive information vulnerability in the Zyxel NBG6604 firmware could allow a remote, authenticated attacker to obtain sensitive information from the configuration file.

Frequently asked questions

What is CVE-2021-35035?
A cleartext storage of sensitive information vulnerability in the Zyxel NBG6604 firmware could allow a remote, authenticated attacker to obtain sensitive information from the configuration file.
How severe is CVE-2021-35035?
CVE-2021-35035 has a CVSS 3.x base score of 4.9, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-35035 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-35035?
CVE-2021-35035 affects Zyxel Nbg6604 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-35035?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-35035 published?
CVE-2021-35035 was published on 2021-12-29 and last updated on 2026-06-17.

References

Affected products (1)

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