FKIE_CVE-2023-27990
Vulnerability from fkie_nvd - Published: 2023-04-24 18:15 - Updated: 2026-06-17 05:46
Severity
4.8 (Medium) - CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
4.8 (Medium) - CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
4.8 (Medium) - CVSS:3.1/
Summary
The cross-site scripting (XSS) vulnerability in Zyxel ATP series firmware versions 4.32 through 5.35, USG FLEX series firmware versions 4.50 through 5.35, USG FLEX 50(W) firmware versions 4.16 through 5.35, USG20(W)-VPN firmware versions 4.16 through 5.35, and VPN series firmware versions 4.30 through 5.35, which could allow an authenticated attacker with administrator privileges to store malicious scripts in a vulnerable device. A successful XSS attack could then result in the stored malicious scripts being executed when the user visits the Logs page of the GUI on the device.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| zyxel | atp200_firmware | * | |
| zyxel | atp200 | - | |
| zyxel | atp100_firmware | * | |
| zyxel | atp100 | - | |
| zyxel | atp700_firmware | * | |
| zyxel | atp700 | - | |
| zyxel | atp500_firmware | * | |
| zyxel | atp500 | - | |
| zyxel | atp100w_firmware | * | |
| zyxel | atp100w | - | |
| zyxel | atp800_firmware | * | |
| zyxel | atp800 | - | |
| zyxel | usg_flex_100_firmware | * | |
| zyxel | usg_flex_100 | - | |
| zyxel | usg_flex_50_firmware | * | |
| zyxel | usg_flex_50 | - | |
| zyxel | usg_flex_200_firmware | * | |
| zyxel | usg_flex_200 | - | |
| zyxel | usg_flex_500_firmware | * | |
| zyxel | usg_flex_500 | - | |
| zyxel | usg_flex_700_firmware | * | |
| zyxel | usg_flex_700 | - | |
| zyxel | usg_flex_100w_firmware | * | |
| zyxel | usg_flex_100w | - | |
| zyxel | usg_20w-vpn_firmware | * | |
| zyxel | usg_20w-vpn | - | |
| zyxel | usg_flex_50w_firmware | * | |
| zyxel | usg_flex_50w | - | |
| zyxel | usg20-vpn_firmware | * | |
| zyxel | usg20-vpn | - | |
| zyxel | vpn100_firmware | * | |
| zyxel | vpn100 | - | |
| zyxel | vpn1000_firmware | * | |
| zyxel | vpn1000 | - | |
| zyxel | vpn300_firmware | * | |
| zyxel | vpn300 | - | |
| zyxel | vpn50_firmware | * | |
| zyxel | vpn50 | - |
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"value": "The cross-site scripting (XSS) vulnerability in Zyxel ATP series firmware versions 4.32 through 5.35, USG FLEX series firmware versions 4.50 through 5.35, USG FLEX 50(W) firmware versions 4.16 through 5.35, USG20(W)-VPN firmware versions 4.16 through 5.35, and VPN series firmware versions 4.30 through 5.35, which could allow an authenticated attacker with administrator privileges to store malicious scripts in a vulnerable device. A successful XSS attack could then result in the stored malicious scripts being executed when the user visits the Logs page of the GUI on the device."
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"id": "CVE-2023-27990",
"lastModified": "2026-06-17T05:46:19.730",
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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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Related by attack behaviour
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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