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Vulnerabilities

Vulnerability · CVE-2017-9805

Apache Struts Deserialization of Untrusted Data Vulnerability

Published Sep 15, 2017 · catalog updated Jun 16, 2026 · Apache Struts

Patch now

CVE-2017-9805 is in the CISA known-exploited catalog, due May 3, 2022. Confirm Apache Struts against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Severity
High8.1
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
99.40%
Remediation
Remediation guidance
Affected products
cpe apache/struts · cpe cisco/digital media manager · cpe cisco/hosted collaboration solution · cpe cisco/media experience engine · cpe netapp/oncommand balance · vendor Apache Struts

The REST Plugin in Apache Struts 2.1.1 through 2.3.x before 2.3.34 and 2.5.x before 2.5.13 uses an XStreamHandler with an instance of XStream for deserialization without any type filtering, which can lead to Remote Code Execution when deserializing XML payloads.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe apache/strutsversion unspecified
  • cpe cisco/digital media managerversion unspecified
  • cpe cisco/hosted collaboration solution10.5\(1\)
  • cpe cisco/hosted collaboration solution11.0\(1\)
  • cpe cisco/hosted collaboration solution11.5\(1\)
  • cpe cisco/hosted collaboration solution11.6\(1\)
  • cpe cisco/media experience engine3.5
  • cpe netapp/oncommand balanceversion unspecified
  • vendor Apache Strutsversion unspecified

How to fix CVE-2017-9805

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2017-9805 is in the CISA known-exploited catalog, due May 3, 2022. Confirm Apache Struts against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Compare what you have installed with cisco/hosted collaboration solution 10.5\(1\); cisco/hosted collaboration solution 11.0\(1\); cisco/hosted collaboration solution 11.5\(1\); cisco/hosted collaboration solution 11.6\(1\). Apply updates per vendor instructions.

What should an analyst verify?

CWE-502: Deserialization of Untrusted Data. EPSS 99.40%. The CISA KEV listing is the exploitation evidence. A public exploit reference is linked in Sources. That is not the same as confirmed exploitation. Use the source links for the original advisory.

Technology hubs

Cisco security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 15, 2017 · Catalog

    Detected

    The REST Plugin in Apache Struts 2.1.1 through 2.3.x before 2.3.34 and 2.5.x before 2.5.13 uses an XStreamHandler with an instance of XStream for deserialization without any type filtering, which can lead to Remote Code Execution when deserializing XML payloads.

  2. Nov 3, 2021 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. May 3, 2022 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Jun 16, 2026 · Catalog

    Updated

    The REST Plugin in Apache Struts 2.1.1 through 2.3.x before 2.3.34 and 2.5.x before 2.5.13 uses an XStreamHandler with an instance of XStream for deserialization without any type filtering, which can lead to Remote Code Execution when deserializing XML payloads.

Sources

  • CISA KEVConfirmed exploitationCVE-2017-9805

    Apache Struts REST Plugin uses an XStreamHandler with an instance of XStream for deserialization without any type filtering, which can lead to remote code execution when deserializing XML payloads.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2017-9805

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2017-9805

    30-day exploitation probability 99.4%

    first.org
  • Exploit DatabasePublic exploit reference42627

    Public archive entry. The exploit body is not stored here.

    exploit-db.com
  • Metasploit ModulesPublic exploit moduleexploit_multi/http/struts2_rest_xstream

    Public module reference (excellent). Module source is not copied into this catalog.

    rapid7.com
  • NIST NVDVulnerability recordCVE-2017-9805

    The REST Plugin in Apache Struts 2.1.1 through 2.3.x before 2.3.34 and 2.5.x before 2.5.13 uses an XStreamHandler with an instance of XStream for deserialization without any type filtering, which can lead to Remote Code Execution when deserializing XML payloads.

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2017-9805

    Apache Struts REST Plugin uses an XStreamHandler with an instance of XStream for deserialization without any type filtering, which can lead to remote code execution when deserializing XML payloads.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.