CVE-2018-25282

Nmap 7.70 Denial of Service via XML Entity Expansion

CVSS 6.9 MEDIUMEPSS 0.1%CWE-674

Vexday Risk Score

33Attention

SSVC decision (CISA)

Attend

PoC available → attend closely

CVSS 6.9EPSS 0.1%KEV nãoPoC públicaNuclei —Metasploit —Patch —

Lifecycle

26 Apr 2026Published on NVD

Recommendation: Plan a near-term fix — a public PoC already exists.

Nmap 7.70 contains a denial of service vulnerability that allows local attackers to crash the application by processing malicious XML files with exponential entity expansion. Attackers can create a crafted XML file with nested entity definitions and open it through ZenMap's scan import functionality to cause the program to consume excessive system resources and crash.

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Affected products

ZenMap · ZenMap

public PoCs found — 1

cve_referencewww.exploit-db.com/exploits/45357unverified

⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

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References

https://nmap.org/dist/nmap-7.70-setup.exe https://www.exploit-db.com/exploits/45357 https://www.vulncheck.com/advisories/nmap-denial-of-service-via-xml-entity-expansion