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Unrated severityNVD Advisory· Published Apr 24, 2023· Updated Feb 12, 2025

CVE-2023-22915

CVE-2023-22915

Description

A buffer overflow vulnerability in the “fbwifi_forward.cgi” CGI program of Zyxel USG FLEX series firmware versions 4.50 through 5.35, USG FLEX 50(W) firmware versions 4.30 through 5.35, USG20(W)-VPN firmware versions 4.30 through 5.35, and VPN series firmware versions 4.30 through 5.35, which could allow a remote unauthenticated attacker to cause DoS conditions by sending a crafted HTTP request if the Facebook WiFi function were enabled on an affected device.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

7
  • Zyxel/USG FLEX 50(W)llm-create2 versions
    4.30 <= firmware <= 5.35+ 1 more
    • (no CPE)range: 4.30 <= firmware <= 5.35
    • (no CPE)range: 4.30 through 5.35
  • Zyxel/VPN seriesllm-fuzzy2 versions
    4.30 <= firmware <= 5.35+ 1 more
    • (no CPE)range: 4.30 <= firmware <= 5.35
    • (no CPE)range: 4.30 through 5.35
  • Zyxel/USG FLEX seriesllm-fuzzy2 versions
    4.50 <= firmware <= 5.35+ 1 more
    • (no CPE)range: 4.50 <= firmware <= 5.35
    • (no CPE)range: 4.50 through 5.35
  • Zyxel/USG20(W)-VPN firmwarev5
    Range: 4.30 through 5.35

Patches

Vulnerability mechanics

References

1

News mentions

0

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