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Description

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.

PUBLISHED Reserved 2026-04-26 | Published 2026-04-26 | Updated 2026-04-27 | Assigner VulnCheck




MEDIUM: 6.9CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
MEDIUM: 6.2CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Problem types

Uncontrolled Recursion

Product status

7.70
affected

Credits

Gionathan "John" Reale finder

References

www.exploit-db.com/exploits/45357 (ExploitDB-45357) exploit

nmap.org/dist/nmap-7.70-setup.exe (Product Reference) product

www.vulncheck.com/...ial-of-service-via-xml-entity-expansion (VulnCheck Advisory: Nmap 7.70 Denial of Service via XML Entity Expansion) third-party-advisory

cve.org (CVE-2018-25282)

nvd.nist.gov (CVE-2018-25282)

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