Skip to content
Fencer Vulns
high 7.5

CVE-2018-15173 json

Nmap through 7.70, when the -sV option is used, allows remote attackers to cause a denial of service (stack consumption and application cra…

published 2018-08-08 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-7053

cvss
7.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
5.8%
EPSS 5.8% chance of exploitation in 30 days, percentile 93%
public exploits
0
none known

Summary

Nmap through 7.70, when the -sV option is used, allows remote attackers to cause a denial of service (stack consumption and application crash) via a crafted TCP-based service.

Patch / fix

  • nmap SLE Module for Package Hub 15 SP2, SLE Module for Package Hub 15 SP1, SLE Module for Package Hub 15 +3 more 7.70-3.12.1
  • nmap SLES for SAP 12 SP4, SLES 12 SP4 6.46-3.6.1
  • nmap SLE Module for Package Hub 15, SLE Module for Basesystem 15 SP1, SLE Module for Basesystem 15 7.70-3.5.1
  • nmap SLES for SAP 12 SP4, SLES for SAP 12 SP3, SLES 12 SP4 +1 more 6.46-3.3.1

suse advisories SUSE-SU-2019:2425-2SUSE-SU-2019:2426-1SUSE-SU-2019:2425-1SUSE-SU-2019:1290-2SUSE-SU-2019:1290-1SUSE-SU-2019:1286-1

  • nmap openSUSE Tumbleweed 7.92-2.1
  • nmap openSUSE Leap 15.1 7.70-lp151.3.9.1
  • nmap openSUSE Leap 15.0 7.70-lp150.2.9.1
  • nmap openSUSE Leap 15.1, openSUSE Leap 15.0 7.70-lp151.3.3.1

opensuse advisories openSUSE-SU-2024:11094-1openSUSE-SU-2019:2200-1openSUSE-SU-2019:2198-1openSUSE-SU-2019:1462-1

  • nmap Alpine 3.10, Alpine 3.9 7.70-r4
  • nmap Alpine 3.24, Alpine 3.23, Alpine 3.22 +11 more 7.80-r0
  • nmap Alpine 3.7 7.60-r3
  • nmap Alpine 3.8 7.70-r2

alpine advisories ALPINE-CVE-2018-15173

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-15173 updated cvss 3.3

nmap: Stack exhausation when -sV option is used allows for DoS

  • Red Hat Enterprise Linux 5 nmap Red Hat Enterprise Linux 6 nmap, nmap-frontend Red Hat Enterprise Linux 7 nmap, nmap-ncat, nmap-frontend Red Hat Enterprise Linux 8 nmap, nmap-ncat Red Hat Virtualization 4 nmap
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

5.85% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • code610.blogspot.com http://code610.blogspot.com/2018/07/crashing-nmap-770.html referenced PoC, tagged "exploit" by a source, unverified
  • code610.blogspot.com http://code610.blogspot.com/2018/07/crashing-nmap-760.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.