CVE-2023-46265Network attack vector

Data disclosure and SSRF via XML entity expansion

Published Dec 19, 2023 · Updated Sep 16, 2024

XXE in the Smart Device Server in Ivanti Avalanche 6.4.1 and earlier allows remote attackers to disclose data or cause SSRF via crafted XML. The ConnectServlet decode method accepts external entity declarations and makes the XML parser fetch the specified URI, embedding returned content for further processing. No authentication or user interaction is required; requests can expose data readable as SYSTEM or reach network resources from the server.

CVSS severity6.5
Medium
EPSS probability4.00%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

XXE in the Smart Device Server in Ivanti Avalanche 6.4.1 and earlier allows remote attackers to disclose data or cause SSRF via crafted XML. The ConnectServlet decode method accepts external entity declarations and makes the XML parser fetch the specified URI, embedding returned content for further processing. No authentication or user interaction is required; requests can expose data readable as SYSTEM or reach network resources from the server.

The record

CVE
CVE-2023-46265
Published
Dec 19, 2023
Updated
Sep 16, 2024
Vendor
Ivanti
Product
Avalanche
Classifications
CWE-611, T1190
Attack vector
network
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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=6.4.1 <=6.4.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Ivanti · Avalancheversion=6.4.1 <=6.4.1

Published CVSS scores

6.5HackerOneCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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-611Improper Restriction of XML External Entity Reference
T1190Exploit Public-Facing Application

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo