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Unrated severityNVD Advisory· Published Jul 17, 2023· Updated Oct 21, 2024

CVE-2023-34140

CVE-2023-34140

Description

A buffer overflow vulnerability in the Zyxel ATP series firmware versions 4.32 through 5.36 Patch 2, USG FLEX series firmware versions 4.50 through 5.36 Patch 2, USG FLEX 50(W) series firmware versions 4.16 through 5.36 Patch 2, USG20(W)-VPN series firmware versions 4.16 through 5.36 Patch 2, VPN series firmware versions 4.30 through 5.36 Patch 2, NXC2500 firmware versions 6.10(AAIG.0) through 6.10(AAIG.3), and NXC5500 firmware versions 6.10(AAOS.0) through 6.10(AAOS.4), could allow an unauthenticated, LAN-based attacker to cause denial of service (DoS) conditions by sending a crafted request to the CAPWAP daemon.

AI Insight

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

Affected products

9
  • Zyxel/ATP seriesllm-fuzzy2 versions
    4.32 - 5.36 Patch 2+ 1 more
    • (no CPE)range: 4.32 - 5.36 Patch 2
    • (no CPE)range: 4.32 through 5.36 Patch 2
  • Zyxel/USG FLEX seriesllm-fuzzy3 versions
    4.50 - 5.36 Patch 2+ 2 more
    • (no CPE)range: 4.50 - 5.36 Patch 2
    • (no CPE)range: 4.16 through 5.36 Patch 2
    • (no CPE)range: 4.50 through 5.36 Patch 2
  • Zyxel/NXC2500 firmwarev5
    Range: 6.10(AAIG.0) through 6.10(AAIG.3)
  • Zyxel/NXC5500 firmwarev5
    Range: 6.10(AAOS.0) through 6.10(AAOS.4)
  • Zyxel/USG20(W)-VPN seriescpe-rescue
    Range: 4.16 through 5.36 Patch 2
  • Zyxel/VPN seriescpe-rescue
    Range: 4.30 through 5.36 Patch 2

Patches

Vulnerability mechanics

References

1

News mentions

0

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