Out-of-Bounds Read in Loytec LIP (CVE-2026-55732)
Summary
Vulnerability in Loytec LIP (CVE-2026-55732). Risk of unauthorized operations or information disclosure. Exploitable via bacdt_datetime_to_tod.
Original description
The description as published by the source.
Out-of-bounds Read (CWE-125) in BACnet packet parsing (bacdt_datetime_to_tod) in Loytec LIP-ME201C, L-INX, L-GATE, L-ROC, L-IOB, L-DALI, L-VIS and L-PAD through 8.4.18 on LINX-A64 allows an unauthenticated remote attacker to crash linx_a64.exe and ultimately reboot the device via a malformed BACnet TimeSynchronization or UTC-TimeSynchronization packet with an invalid month value. The same vulnerability affects multiple other Loytec products.
Source: GitHub Security Advisories (Global) NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-55732 has been found in Loytec LIP.
Attackers can target a specific entry point like bacdt_datetime_to_tod over the network to misuse the product.
Risk of unauthorized operations or information disclosure.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "Loytec LIP CVE-2026-55732" on the vendor's site.
CVE-2026-55732 (Loytec LIP) — CWE-125
Attack surface: bacdt_datetime_to_tod / linx_a64.exe
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
Out-of-bounds read (CWE-125) exists in Loytec LIP. Attackers reach the vulnerable code path via bacdt_datetime_to_tod.
Check the vendor advisory for the affected versions of Loytec LIP. Attack surface: bacdt_datetime_to_tod / linx_a64.exe.
Severity: ?. Risk of unauthorized operations or information disclosure.
Update to the patched release per vendor advisory.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
Audit SBOM/dependencies for affected components.資産台帳・SBOM・依存マニフェストで Loytec LIP を使っているサービスとバージョンを洗い出す。
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2Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
References
- web nvd.nist.gov
- web vulnerability@ncsc.ch
- web github.com