Lantronix Autonomous Out-of-Band Devices Predictable Session Token with Validation Bypass
All firmware versions of Lantronix SLC8000, SLC9000, EMG8500, EMG7500, SLB882, SLCx-03, and SLCx-02 contain an authentication bypass vulnerability in the web management portal that allows unauthenticated attackers to derive valid session tokens of logged-in users and bypass source IP and User-Agent validation. Session tokens are generated deterministically from the device model and the current time at one-second resolution, resulting in a small enumerable set of possible active tokens. Attackers can construct a crafted URI that exploits file extension handling in the web server path routing to bypass per-session source-address validation, then use a derived token from a different source address to gain elevated privileges on the affected device and potentially impact downstream serial-attached devices.
CVE-2026-80154
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-80154
SLC8000
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
EMG8500
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
EMG7500
Source reference: /containers/cna/affected/2/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
SLB882
Source reference: /containers/cna/affected/3/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
SLCx-03
Source reference: /containers/cna/affected/4/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
SLCx-02
Source reference: /containers/cna/affected/5/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
SLC9000
Source reference: /containers/cna/affected/6/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "LANTRONIX",
"product": "SLC8000",
"versions": [
{
"status": "affected",
"version": "*",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "LANTRONIX",
"product": "EMG8500",
"versions": [
{
"status": "affected",
"version": "*",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "LANTRONIX",
"product": "EMG7500",
"versions": [
{
"status": "affected",
"version": "*",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "LANTRONIX",
"product": "SLB882",
"versions": [
{
"status": "affected",
"version": "*",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "LANTRONIX",
"product": "SLCx-03",
"versions": [
{
"status": "affected",
"version": "*",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "LANTRONIX",
"product": "SLCx-02",
"versions": [
{
"status": "affected",
"version": "*",
"versionType": "custom"
}
],
"defaultStatus": "unaffected"
},
{
"vendor": "LANTRONIX",
"product": "SLC9000",
"versions": [
{
"status": "affected",
"version": "*",
"versionType": "custom"
}
],
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-80154
Source reference:
/cveMetadata/cveId
Publisher severity
critical
Source reference: /containers/cna/metrics
- Event
- #1860 · Revision 1
- Added to Heist Feed
- Publisher date