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.

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Fixes

Solution

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Workaround

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History

Tue, 28 Apr 2026 00:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-776
References
Metrics threat_severity

None

threat_severity

Moderate


Mon, 27 Apr 2026 20:45:00 +0000

Type Values Removed Values Added
First Time appeared Zenmap
Zenmap zenmap
Vendors & Products Zenmap
Zenmap zenmap

Mon, 27 Apr 2026 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Sun, 26 Apr 2026 13:30:00 +0000

Type Values Removed Values Added
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.
Title Nmap 7.70 Denial of Service via XML Entity Expansion
Weaknesses CWE-674
References
Metrics cvssV3_1

{'score': 6.2, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 6.9, 'vector': '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'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-04-27T14:04:40.659Z

Reserved: 2026-04-26T13:02:34.328Z

Link: CVE-2018-25282

cve-icon Vulnrichment

Updated: 2026-04-27T14:04:36.142Z

cve-icon NVD

Status : Deferred

Published: 2026-04-26T22:17:28.993

Modified: 2026-04-27T18:55:32.883

Link: CVE-2018-25282

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-04-26T13:19:14Z

Links: CVE-2018-25282 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-04-27T20:20:26Z

Weaknesses