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EUVD-2026-159811
European Vulnerability Database identifier assigned by ENISAReserved
2026-10-02 06:37
Assigner
ENISA
Alias of
a CVE record, shown under related vulnerabilities.
This identifier carries no description, severity or references of its own:
they belong to that CVE.
{
"assigner": "ENISA",
"date_reserved": "2026-10-02T06:37:47.486639+00:00",
"id": "EUVD-2026-159811"
}
CVE-2023-6398 (GCVE-0-2023-6398)
Vulnerability from cvelistv5 – Published: 2024-02-20 01:34 – Updated: 2024-08-25 15:46
VLAI
EPSS
VEX
Summary
A post-authentication command injection vulnerability in the file upload binary in Zyxel ATP series firmware versions from 4.32 through 5.37 Patch 1, USG FLEX series firmware versions from 4.50 through 5.37 Patch 1, USG FLEX 50(W) series firmware versions from 4.16 through 5.37 Patch 1, USG20(W)-VPN series firmware versions from 4.16 through 5.37 Patch 1,
USG FLEX H series firmware versions from 1.10 through 1.10 Patch 1,
NWA50AX firmware versions through 6.29(ABYW.3), WAC500 firmware versions through 6.65(ABVS.1), WAX300H firmware versions through 6.60(ACHF.1), and WBE660S firmware versions through 6.65(ACGG.1) could allow an authenticated attacker with administrator privileges to execute some operating system (OS) commands on an affected device via FTP.
Severity
7.2 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-03-01 05:01 UTC
CWE
- CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.zyxel.com/global/en/support/security-… | vendor-advisory |
Impacted products
16 products
| Vendor | Product | Version | |
|---|---|---|---|
| Zyxel | ATP series firmware |
Affected:
version 4.32 through 5.37 Patch 1
|
|
| Zyxel | USG FLEX series firmware |
Affected:
version 4.50 through 5.37 Patch 1
|
|
| Zyxel | USG FLEX 50(W) series firmware |
Affected:
version 4.16 through 5.37 Patch 1
|
|
| Zyxel | USG20(W)-VPN series firmware |
Affected:
version 4.16 through 5.37 Patch 1
|
|
| Zyxel | NWA50AX firmware |
Affected:
< 6.29(ABYW.4)
|
|
| Zyxel | WAC500 firmware |
Affected:
< 6.70(ABVS.1)
|
|
| Zyxel | WAX300H firmware |
Affected:
< 6.70(ACHF.1)
|
|
| Zyxel | WBE660S firmware |
Affected:
< 6.70(ACGG.1)
|
|
| Zyxel | USG FLEX H series firmware |
Affected:
version 1.10 through 1.10 Patch 1
|
|
| zyxel | atp800_firmware |
Affected:
4.32 , ≤ 5.37_patch1
(custom)
cpe:2.3:o:zyxel:atp100_firmware:*:*:*:*:*:*:*:* cpe:2.3:o:zyxel:atp200_firmware:*:*:*:*:*:*:*:* cpe:2.3:o:zyxel:atp500_firmware:*:*:*:*:*:*:*:* cpe:2.3:o:zyxel:atp700_firmware:*:*:*:*:*:*:*:* cpe:2.3:o:zyxel:atp800_firmware:*:*:*:*:*:*:*:* cpe:2.3:o:zyxel:usg_flex_200_firmware:*:*:*:*:*:*:*:* cpe:2.3:o:zyxel:usg_flex_500_firmware:*:*:*:*:*:*:*:* |
|
| zyxel | usg_flex_700_firmware |
Affected:
4.50 , < 5.37_patch1
(custom)
cpe:2.3:o:zyxel:usg_flex_100w_firmware:*:*:*:*:*:*:*:* cpe:2.3:o:zyxel:usg_flex_200_firmware:*:*:*:*:*:*:*:* cpe:2.3:o:zyxel:usg_flex_500_firmware:*:*:*:*:*:*:*:* cpe:2.3:o:zyxel:usg_flex_500w_firmware:*:*:*:*:*:*:*:* cpe:2.3:o:zyxel:usg_flex_700_firmware:*:*:*:*:*:*:*:* |
|
| zyxel | nwa50ax_firmware |
Affected:
0 , < 6.29\(abyw.4\)
(custom)
cpe:2.3:o:zyxel:nwa50ax_firmware:-:*:*:*:*:*:*:* |
|
| zyxel | wac500_firmware |
Affected:
0 , < 6.70\(abvs.1\)
(custom)
cpe:2.3:o:zyxel:wac500_firmware:-:*:*:*:*:*:*:* |
|
| zyxel | wax300h_firmware |
Affected:
0 , < 6.70\(achf.1\)
(custom)
cpe:2.3:o:zyxel:wax300h_firmware:*:*:*:*:*:*:*:* |
|
| zyxel | wbe660s_firmware |
Affected:
0 , < 6.70\(acgg.1\)
(custom)
cpe:2.3:o:zyxel:wbe660s_firmware:*:*:*:*:*:*:*:* |
|
| zyxel | usg_20w-vpn_firmware |
Affected:
4.16 , ≤ 5.37_patch1
(custom)
cpe:2.3:o:zyxel:usg_20w-vpn_firmware:-:*:*:*:*:*:*:* |
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Trend slope:
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Show additional events:
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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