CVE-2026-102486: NTS extension field parsing · (Out-of-bounds read
Affects ntpsecSource GCVE Database
Not known to be exploited · CVSS 7.5 High.
Data as of 27 Oct 2026, 08:27 UTC
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 21 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.10ntpsecpkg:deb/ubuntu/ntpsec?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSntpsecpkg:deb/ubuntu/ntpsec?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 24.04 LTSntpsecpkg:deb/ubuntu/ntpsec?arch=source&distro=nobleOther threats | Affected
| Fixed in– |
Ubuntu 22.04 LTSntpsecpkg:deb/ubuntu/ntpsec?arch=source&distro=jammyOther threats | Affected
| Fixed in– |
Ubuntu 20.04 LTSntpsecpkg:deb/ubuntu/ntpsec?arch=source&distro=focalOther threats | Affected
| Fixed in– |
Ubuntu 18.04 LTSntpsecpkg:deb/ubuntu/ntpsec?arch=source&distro=bionicOther threats | Affected
| 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.