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CVE-2023-27992
CWE-78
Critical
103.6
RPSRPS range: 0–105; KEV-listed vulnerabilities can receive an exploitation amplifier.
Description
The pre-authentication command injection vulnerability in the Zyxel NAS326 firmware versions prior to V5.21(AAZF.14)C0, NAS540 firmware versions prior to V5.21(AATB.11)C0, and NAS542 firmware versions prior to V5.21(ABAG.11)C0 could allow an unauthenticated attacker to execute some operating system (OS) commands remotely by sending a crafted HTTP request.
Source: NVD
Signals
- CVSS
- 9.8
- Critical · v3.1
- EPSS
- 82.82%
- Probability of exploitation in the next 30 days (FIRST)
- CISA KEV
- In CISA KEV since Jun 2023
- Fix commit
- No known fix commit
- Sources: MoreFixes, FreshFixes
- Weakness
- CWE-78
- Published
- 19 Jun 2023
- Last modified 27 Oct 2025
How to read these signals: RPS · EPSS · CISA KEV · Data sources
Get this score from the API
curl -H "Authorization: Bearer dsec_live_xxxxxxxx" \
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Data as of 7 Oct 2026, 05:16 UK time