Nmap 7.70 Denial of Service via XML Entity Expansion
Published Apr 26, 2026
6.9
MEDIUMCVSS 4.0
EPSS 0.12%
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.
Affected products
-
- Version 7.70StatusaffectedConstraints-
- Version
No data.
No data.
Red Hat Enterprise Linux 10
nmap
Not affected
Red Hat Enterprise Linux 6
nmap
Not affected
Red Hat Enterprise Linux 7
nmap
Not affected
Red Hat Enterprise Linux 8
nmap
Fix deferred
Red Hat Enterprise Linux 9
nmap
Not affected
Red Hat OpenShift Container Platform 4
openshift/ose-rhel-coreos-8
Fix deferred
Red Hat OpenShift Container Platform 4
openshift/ose-rhel-coreos-9
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 10 | nmap | Not affected | n/a |
| Red Hat Enterprise Linux 6 | nmap | Not affected | n/a |
| Red Hat Enterprise Linux 7 | nmap | Not affected | n/a |
| Red Hat Enterprise Linux 8 | nmap | Fix deferred | n/a |
| Red Hat Enterprise Linux 9 | nmap | Not affected | n/a |
| Red Hat OpenShift Container Platform 4 | openshift/ose-rhel-coreos-8 | Fix deferred | n/a |
| Red Hat OpenShift Container Platform 4 | openshift/ose-rhel-coreos-9 | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
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
1 other source (NVD) ▾
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
1 other source (CVE.org) ▾
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
PoCAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Apr 27, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
Apr–Oct 2026- EPSS v4
- EPSS v5
Percentile over time
- EPSS v4
- EPSS v5
Table of values (3 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.12% (0.00121) | 1.71th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.12% (0.00123) | 2.41th | v5 (v2026.06.15) |
| Apr 27, 2026 | 0.01% (0.00012) | 1.69th | v4 (v2025.03.14) |
References (7)
- https://access.redhat.com/security/cve/CVE-2018-25282 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2461936 Issue Tracking
- https://nmap.org/dist/nmap-7.70-setup.exe product
- https://nvd.nist.gov/vuln/detail/CVE-2018-25282
- https://www.cve.org/CVERecord?id=CVE-2018-25282
- https://www.exploit-db.com/exploits/45357 exploit
- https://www.vulncheck.com/advisories/nmap-denial-of-service-via-xml-entity-expansion third-party-advisory
Change history (0)
No recorded changes yet.