CVE-2026-54579CWE-125CWE-345

CVE-2026-54579

published September 17, 2026

CVSS
2.3
EPSS
0%
Percentile
4.7
In the wild
Unconfirmed
What it is

mport is the MidnightBSD Package Manager. Prior to 2.7.8, ping() in libmport/ping.c accepted ICMP replies without validating icmp_id or icmp_seq and parsed the reply using a fixed IP-header offset instead of ip_hl. A network attacker able to inject or spoof visible ICMP replies could influence mirror latency selection, while a malformed packet carrying IP options could shift the ICMP header and trigger an out-of-bounds read. This issue is fixed in version 2.7.8.

The record
Technical detail
CVSS
2.3 · NONE
CVSS v4.0
2.3 · CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
EPSS
0.00159 · 4.7th percentile
Weaknesses
CWE-125 · Out-of-bounds Read; CWE-345 · Insufficient Verification of Data Authenticity
Published
2026-09-17T21:16Z
References (1)
https://github.com/MidnightBSD/mport/security/advisories/GHSA-qc2f-2j7j-m3r7 · [email protected]
EPSS history
Timeline
  • 19 SEP 03:53Z
    EPSS moved — → 0%
    epss
  • 17 SEP 16:59Z
    mport mirror-selection ping accepts insufficiently validated ICMP replies
    cvelistv5