What’s Vulnerable › Vulnerabilities

CVE-2023-26554

• Severity: medium (CVSS 5.6 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-04-11 · updated 2026-06-17
• Weakness: CWE-787

Description

mstolfp in libntp/mstolfp.c in NTP 4.2.8p15 has an out-of-bounds write when adding a '\0' character. An adversary may be able to attack a client ntpq process, but cannot attack ntpd.

Affected products

• NTP: 4.2.8-p15

References

• https://github.com/spwpun/ntp-4.2.8p15-cves/blob/main/CVE-2023-26554
• https://github.com/spwpun/ntp-4.2.8p15-cves/issues/1#issuecomment-1506667321
• https://github.com/spwpun/ntp-4.2.8p15-cves/blob/main/CVE-2023-26554
• https://github.com/spwpun/ntp-4.2.8p15-cves/issues/1#issuecomment-1506667321

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