Critical severity9.8NVD Advisory· Published Nov 15, 2018· Updated Jun 17, 2026

CVE-2018-0683

Description

Buffer overflow in Denbun by NEOJAPAN Inc. (Denbun POP version V3.3P R4.0 and earlier, Denbun IMAP version V3.3I R4.0 and earlier) allows remote attackers to execute arbitrary code or cause a denial-of-service (DoS) condition via Cookie data.

AI Insight

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

Affected products

NEOJAPAN Inc./Denbun POPllm-fuzzy
Range: <=V3.3P R4.0
NEOJAPAN Inc./Denbun IMAPllm-fuzzy
Range: <=V3.3I R4.0
NEOJAPAN Inc./Denbun by NEOJAPAN Inc. (Denbun POP version V3.3P R4.0 and earlier, Denbun IMAP version V3.3I R4.0 and earlier)v5
Range: Denbun POP version V3.3P R4.0 and earlier, Denbun IMAP version V3.3I R4.0 and earlier

Patches

Vulnerability mechanics

References

jvn.jp/en/jp/JVN00344155/index.htmlnvdThird Party Advisory
www.denbun.com/en/imap/support/security/181003.htmlnvdVendor Advisory
www.denbun.com/en/pop/support/security/181003.htmlnvdVendor Advisory

News mentions

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cvss	0.637
epss	0.003
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000