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01 Record

CVE-2026-55728

Loytec LINX firmware: Stack-based Buffer Overflow in cmd_ipaddr_conflict

LowPUBLISHEDCNA: NCSC.ch
CNA base score3.8 CVSS v4.0CVSS: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

02 Description

Loytec LINX firmware: Stack-based Buffer Overflow in cmd_ipaddr_conflict

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.15% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 5.0% of scored records. A rank, not a probability.
NVD base score
3.8 (CVSS v4.0), scored by the NVD independently of the CNA.
NVD CVSS 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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD analysis status
Deferred. NVD last modified this record on 2026-07-27.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-07-24 13:58Z3 MO AGO
Last updated
2026-07-24 14:56Z3 MO AGO
Reserved
2026-06-17
Assigning CNA
NCSC.ch
Record state
PUBLISHED
Severity
Low (CVSS 3.8)
CNA CVSS 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
Weaknesses
  • CWE-121Stack-based Buffer OverflowVariant
Data version
5.2
Document digest
4f7352aab42452d398d0b576782fc63f65923f7726e1fca2f8859f9747e339d5

05 Affected products

VendorProductVersionsPlatforms
LoytecLIP-ME20xC0 to 8.4.16—
LoytecL-INX0 to 8.4.16—
LoytecL-GATE0 to 8.4.16—
LoytecL-ROC0 to 8.4.16—
LoytecL-IOB0 to 8.4.16—
LoytecL-DALI0 to 8.4.16—
LoytecL-VIS0 to 8.4.16—
LoytecL-PAD0 to 8.4.16—

06 References

07 Remediation

Upgrade to firmware version 8.4.18.