Vulnerability · Published Jul 24, 2026 · Assigned by NCSC.ch

CVE-2026-55728Loytec LINX firmware: Stack-based Buffer Overflow in cmd_ipaddr_conflict

Low 3.8

In plain English

A low-severity stack buffer overflow in L-DALI from Loytec. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 5% of all known vulnerabilities).

Severity (CVSS 4.0)3.8Low

Exploit odds (30 days)0.2%top 94.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Stack-based Buffer Overflow (CWE-121) in `/usr/bin/ltsudo` `cmd_ipaddr_conflict` in Loytec LIP-ME201C, L-INX, L-GATE, L-ROC, L-IOB, L-DALI, L-VIS and L-PAD through 8.4.16 on LINX-A64 allows a `superadmin`-group attacker to trigger a SUID-root process abort or potentially elevate privileges via an overly long interface-name argument.

Affected products (as reported)

Vendor	Product	Versions
Loytec	LIP-ME20xC	0 – through 8.4.16
Loytec	L-INX	0 – through 8.4.16
Loytec	L-GATE	0 – through 8.4.16
Loytec	L-ROC	0 – through 8.4.16
Loytec	L-IOB	0 – through 8.4.16
Loytec	L-DALI	0 – through 8.4.16
Loytec	L-VIS	0 – through 8.4.16
Loytec	L-PAD	0 – through 8.4.16

Weakness: CWE-121 · Vector: CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:U

References

https://www.loytec.com/support/product-security/advisories/8523-dibt-cve-20260526-0005-stack-buffer-overflow-in-cmd_ipaddr_conflict-low vendor-advisory