CVE-2023-33013
CVE-2023-33013 is a high-severity vulnerability in Zyxel Nbg6604 Firmware with a CVSS 3.x base score of 8.8. 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-78.
Key facts
- Severity: High (CVSS 3.x base score 8.8)
- EPSS exploit prediction: 1% (70th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-78
- Affected product: Zyxel Nbg6604 Firmware
- Published:
- Last modified:
Description
A post-authentication command injection vulnerability in the NTP feature of Zyxel NBG6604 firmware version V1.01(ABIR.1)C0 could allow an authenticated attacker to execute some OS commands remotely by sending a crafted HTTP request.
Frequently asked questions
- What is CVE-2023-33013?
- A post-authentication command injection vulnerability in the NTP feature of Zyxel NBG6604 firmware version V1.01(ABIR.1)C0 could allow an authenticated attacker to execute some OS commands remotely by sending a crafted HTTP request.
- How severe is CVE-2023-33013?
- CVE-2023-33013 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2023-33013 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2023-33013?
- CVE-2023-33013 affects Zyxel Nbg6604 Firmware. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2023-33013?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2023-33013 published?
- CVE-2023-33013 was published on 2023-08-14 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:o:zyxel:nbg6604_firmware:1.01\(abir.1\)c0:*:*:*:*:*:*:*
More vulnerabilities in Zyxel Nbg6604 Firmware
- CVE-2023-22919 — High (CVSS 8.8): The post-authentication command injection vulnerability in the Zyxel NBG6604 firmware version V1.01(ABIR.0)C0 could…
- CVE-2021-35034 — High (CVSS 7.4): An insufficient session expiration vulnerability in the CGI program of the Zyxel NBG6604 firmware could allow a remote…
- CVE-2021-35035 — Medium (CVSS 4.9): A cleartext storage of sensitive information vulnerability in the Zyxel NBG6604 firmware could allow a remote,…
All CVEs affecting Zyxel Nbg6604 Firmware →
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