Skip to main content
VulnerabilityPublished Updated

CVE-2026-102486: NTS extension field parsing · (Out-of-bounds read

Affects ntpsecSource GCVE Database

0
Authoritative record:CVE-2026-102486· High 7.5

Not known to be exploited · CVSS 7.5 High.

Data as of 27 Oct 2026, 08:27 UTC

CVSS 3.1 base score
7.5High
How severe the flaw is on the 0–10 CVSS scale.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 21 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Ubuntu 26.10ntpsecpkg:deb/ubuntu/ntpsec?arch=source&distro=stonkingOther threatsAffected
  • =1.2.3+dfsg1-8ubuntu2
  • =1.2.3+dfsg1-8ubuntu3
Fixed in–
Ubuntu 26.04 LTSntpsecpkg:deb/ubuntu/ntpsec?arch=source&distro=resoluteOther threatsAffected
  • =1.2.3+dfsg1-8ubuntu1
  • =1.2.3+dfsg1-8ubuntu2
Fixed in–
Ubuntu 24.04 LTSntpsecpkg:deb/ubuntu/ntpsec?arch=source&distro=nobleOther threatsAffected
  • 1.2.2+dfsg1-2 – 1.2.2+dfsg1-4build2
5 affected builds
Fixed in–
Ubuntu 22.04 LTSntpsecpkg:deb/ubuntu/ntpsec?arch=source&distro=jammyOther threatsAffected
  • 1.2.0+dfsg1-4 – 1.2.1+dfsg1-4
5 affected builds
Fixed in–
Ubuntu 20.04 LTSntpsecpkg:deb/ubuntu/ntpsec?arch=source&distro=focalOther threatsAffected
  • 1.1.3+dfsg1-2 – 1.1.8+dfsg1-4build1
7 affected builds
Fixed in–
Ubuntu 18.04 LTSntpsecpkg:deb/ubuntu/ntpsec?arch=source&distro=bionicOther threatsAffected
  • 1.0.0+dfsg1-1 – 1.1.0+dfsg1-1ubuntu0.2
5 affected builds
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Until a fix is available, consider limiting exposure of the ntpd service to untrusted networks to reduce risk.

Description

CVE-2026-102486 is a high-severity vulnerability in NTPsec ntpd 1.1.4 and related versions involving an out-of-bounds read during NTS extension field parsing. This flaw can cause a denial of service by crashing the ntpd process. The vulnerability does not impact confidentiality or integrity but affects availability. Multiple specific versions of NTPsec are affected.

References

Community reviews

Loading reviews…