CVE-2023-39370Network attack vector

Browser script execution via undisclosed stored input

Published Sep 3, 2023 · Updated Sep 27, 2024

Stored cross-site scripting in StarTrinity Softswitch 2023-02-16 allows remote attackers to execute script in a user's browser. Neither the CNA record nor the vendor's public material identifies the WebUI field, request handler, or missing output-encoding operation that stores the payload. The attack requires a user to view affected WebUI content; published evidence reports browser-level confidentiality and integrity effects but does not explain the scored availability impact.

CVSS severity8.8
High
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in StarTrinity Softswitch 2023-02-16 allows remote attackers to execute script in a user's browser. Neither the CNA record nor the vendor's public material identifies the WebUI field, request handler, or missing output-encoding operation that stores the payload. The attack requires a user to view affected WebUI content; published evidence reports browser-level confidentiality and integrity effects but does not explain the scored availability impact.

The record

CVE
CVE-2023-39370
Published
Sep 3, 2023
Updated
Sep 27, 2024
Vendor
StarTrinity
Product
StarTrinity Softswitch
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 3, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 27, 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 2023-02-16 <Upgrade to version 2023-07-27

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

StarTrinity · StarTrinity Softswitchversion=version 2023-02-16 <Upgrade to version 2023-07-27

Published CVSS scores

8.8Israel National Cyber DirectorateCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:H
5.4NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:L/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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