CVE-2026-91018

EUVD-2026-84864
lwIP (Lightweight IP) has a double free vulnerability, which could crash the system, cause a DoS, memory corruption, or allow code execution on the victim system.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
8.8 HIGH
ADJACENT_NETWORK
LOW
NONE
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 34.15%
Debian logo
Debian Releases
Debian Product
Codename
lwip
bookworm
postponed
forky
2.2.1+dfsg1-9
fixed
sid
2.2.1+dfsg1-9
fixed
trixie
no-dsa
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
lwip
focal
needs-triage
jammy
needs-triage
noble
needs-triage
resolute
needs-triage
stonking
needs-triage
Common Weakness Enumeration
References
https://cgit.git.savannah.gnu.org/cgit/lwip.git
https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-265-02.json
https://www.cisa.gov/news-events/ics-advisories/icsa-26-265-02