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Vulnerability record · CVE-2024-38653 · published 14 August 2024

CVE-2024-38653: Ivanti Avalanche SmartDeviceServer XXE allows unauthenticated file read

Ivanti · Avalanche

SmartDeviceServer in Ivanti Avalanche 6.3.1 is vulnerable to XML external entity (XXE) injection. A remote attacker can submit crafted XML that causes the server to resolve external entities, exposing files on the host. Because no authentication or user interaction is required, any network-reachable instance is at risk.

7.5 CVSS 3.1 High EPSS 92% · top 0.2% CWE-611 · XML external entity (XXE)
7.5CVSS 3.1 base score
92%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

Description

XXE in SmartDeviceServer in Ivanti Avalanche 6.3.1 allows a remote unauthenticated attacker to read arbitrary files on the server.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Automated analysis

Generated by VULONE's analysis model from the NVD record, CISA KEV and EPSS data on 18 September 2026. Confidence: medium.

high priorityUnauthenticated remote file read with high confidentiality impact and very high EPSS, though not yet in KEV and no confirmed in-the-wild exploitation is documented.

What it is

SmartDeviceServer in Ivanti Avalanche 6.3.1 is vulnerable to XML external entity (XXE) injection. A remote attacker can submit crafted XML that causes the server to resolve external entities, exposing files on the host. Because no authentication or user interaction is required, any network-reachable instance is at risk.

Impact

An attacker gains read access to arbitrary files on the server, which can expose configuration data, credentials, or other sensitive content. The CVSS vector shows high confidentiality impact with no integrity or availability effect.

Attack surface

Reached over the network via the SmartDeviceServer XML interface; the CVSS vector (AV:N/PR:N/UI:N) indicates no authentication and no user interaction are needed. The record does not specify the exact endpoint or port.

Exploitation

Not listed in CISA KEV and no public exploit references are provided, but EPSS is very high (0.91984, 99.8th percentile), indicating strong predicted likelihood of exploitation activity.

What to do

  • Apply the Ivanti Avalanche 6.4.4 update referenced in the vendor advisory, which addresses this CVE.
  • If patching cannot be done immediately, restrict network access to SmartDeviceServer to trusted hosts only.
  • Disable external entity and DTD processing in the XML parser handling SmartDeviceServer requests.
  • Monitor Ivanti advisories for any further guidance or updated fixed versions.

Detection

  • Inspect SmartDeviceServer request logs for XML payloads containing DOCTYPE declarations or SYSTEM/PUBLIC entity references.
  • Alert on outbound connections or file-read patterns originating from the Avalanche server process that are unusual for normal operation.
  • Review server file access logs for reads of sensitive paths (configuration, credential, or system files) by the Avalanche service account.

This assessment is produced automatically and is not human-reviewed. Verify against the vendor advisory before acting on it.

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://forums.ivanti.com/s/article/Security-Advisory-Ivanti-Avalanche-6-4-4-CVE-2024-38652-CVE-2024-38653-CVE-2024-3613 Vendor Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2024-38653), CISA KEV, FIRST EPSS (scores of 2026-09-24). This page is refreshed as NVD updates the record.