CVE-2023-23841Network attack vector

Sensitive-data exposure via cleartext request URL

Published Jun 15, 2023 · Updated Dec 12, 2024

Cleartext transmission in SolarWinds Serv-U 15.3.2 and earlier allows remote attackers to read sensitive data from a request URL. When File Share or File Request attributes are changed or updated, Serv-U submits an HTTP request whose URL embeds sensitive data. The vendor has not identified the exposed fields or the request recipient, so disclosure is bounded to data placed in that URL.

CVSS severity7.5
High
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cleartext transmission in SolarWinds Serv-U 15.3.2 and earlier allows remote attackers to read sensitive data from a request URL. When File Share or File Request attributes are changed or updated, Serv-U submits an HTTP request whose URL embeds sensitive data. The vendor has not identified the exposed fields or the request recipient, so disclosure is bounded to data placed in that URL.

The record

CVE
CVE-2023-23841
Published
Jun 15, 2023
Updated
Dec 12, 2024
Vendor
SolarWinds
Product
Serv-U
Classifications
CWE-319, CAPEC-204
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 15, 2023CVE publishedPublication date reported by the CVE source.
  2. Dec 12, 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=previous versions <=15.3.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

SolarWinds · Serv-Uversion=previous versions <=15.3.2

Published CVSS scores

7.5SolarWindsCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/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.

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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-319Cleartext Transmission of Sensitive Information
CAPEC-204Lifting Sensitive Data Embedded in Cache

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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