Critical severity · published Mar 13, 2026
CVE-2026-1668
Input Validation Vulnerability on Multiple Omada Switches
9.8
CVSS
1%
EPSS
No
On KEV
Description
The web interface on multiple Omada switches does not adequately validate certain external inputs, which may lead to out-of-bound memory access when processing crafted requests. Under specific conditions, this flaw may result in unintended command execution.<br>An unauthenticated attacker with network access to the affected interface may cause memory corruption, service instability, or information disclosure. Successful exploitation may allow remote code execution or denial-of-service.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.0% · higher than 63% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
S1
SG2005P-PD 1.x · TP-Link Systems Inc.
before 1.0.19 Build 20260121 Rel.53429 · source: vendor
S4
SG2008 4.2x · TP-Link Systems Inc.
before 4.20.17 Build 20260121 Rel.53429 · source: vendor
S4
SG2008 4.3x · TP-Link Systems Inc.
before 4.30.1 Build 20260127 Rel.32017 · source: vendor
S3
SG2008P 3.2x · TP-Link Systems Inc.
before 3.20.17 Build 20260121 Rel.53429 · source: vendor
S3
SG2008P 3.3x · TP-Link Systems Inc.
before 3.30.1 Build 20260127 Rel.32017 · source: vendor
S1
SG2016P 1.2x · TP-Link Systems Inc.
before 1.20.17 Build 20260121 Rel.53429 · source: vendor
S1
SG2016P 1.3x · TP-Link Systems Inc.
before 1.30.1 Build 20260127 Rel.32017 · source: vendor
S4
SG2210MP 4.2x · TP-Link Systems Inc.
before 4.20.18 Build 20260121 Rel.53429 · source: vendor
S5
SG2210MP 5.2x · TP-Link Systems Inc.
before 5.20.1 Build 20260127 Rel.32017 · source: vendor
S5
SG2210MP 5.x · TP-Link Systems Inc.
before 5.0.15 Build 20260121 Rel.53429 · source: vendor
S5
SG2210P 5.2x · TP-Link Systems Inc.
before 5.20.18 Build 20260121 Rel.53429 · source: vendor
S5
SG2210P 5.3x · TP-Link Systems Inc.
before 5.30.1 Build 20260127 Rel.32017 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-1668
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-1668
Product
https://support.omadanetworks.com/au/download/firmware/
Product
https://support.omadanetworks.com/en/download/firmware/
Vendor Advisory
https://support.omadanetworks.com/us/document/118794/
Product
https://support.omadanetworks.com/us/product/
