CVE-2023-50704

Phishing via crafted open-redirect URLs

Published Dec 19, 2023 · Updated Sep 16, 2024

Open redirect in Efacec UC 500E 10.1.0 allows attackers to send application users to arbitrary external domains via crafted URLs. Published advisories do not identify the affected route, parameter, or redirect-validation operation; they disclose only that a URL constructed within the application triggers the external redirect. A user must follow or otherwise open the crafted URL, enabling phishing under the trust associated with the application domain.

CVSS severity4.3
Medium
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Open redirect in Efacec UC 500E 10.1.0 allows attackers to send application users to arbitrary external domains via crafted URLs. Published advisories do not identify the affected route, parameter, or redirect-validation operation; they disclose only that a URL constructed within the application triggers the external redirect. A user must follow or otherwise open the crafted URL, enabling phishing under the trust associated with the application domain.

The record

CVE
CVE-2023-50704
Published
Dec 19, 2023
Updated
Sep 16, 2024
Vendor
Efacec
Product
UC 500E
Classifications
CWE-601, T1566.002
Attack vector
Unavailable
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 19, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=version 10.1.0

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesunauthenticated

What is affected?

Efacec · UC 500Eversion=version 10.1.0

Published CVSS scores

4.3ICS-CERTCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-601URL Redirection to Untrusted Site ('Open Redirect')
T1566.002Phishing: Spearphishing Link

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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