CVE-2016-3081
Apache Struts Command Injection Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 11 October 2026). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
Apache Struts 2.3.19 to 2.3.20.2, 2.3.21 to 2.3.24.1, and 2.3.25 to 2.3.28, when Dynamic Method Invocation is enabled, allow remote attackers to execute arbitrary code via method: prefix, related to chained expressions.
- CVSS 3.1
- 8.1 HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 96.53% probability · 100th percentile
- Public exploits
- 1 in Exploit-DB · verified · first 2 May 2016
- CISA KEV
- Listed 8 October 2026 · due 11 October 2026
- Weakness
- CWE-77
- Affected
- huawei/agile controller-campus firmware · huawei/anyoffice · huawei/logcenter · huawei/firehunter6000 firmware · huawei/oceanstor 5300 v3 firmware · huawei/oceanstor 5500 v3 firmware · huawei/oceanstor 5600 v3 firmware · huawei/oceanstor 5800 v3 firmware · huawei/oceanstor 6800 v3 firmware · huawei/oceanstor 18500 v3 firmware · huawei/oceanstor 18500f firmware · huawei/oceanstor 18800 v3 firmware · huawei/oceanstor 18800f firmware · huawei/oceanstor 9000 firmware · huawei/oceanstor n8500 firmware · huawei/oceanstor onebox firmware · apache/struts · oracle/flexcube private banking · oracle/micros retail xbri loss prevention · oracle/siebel e-billing
- Source
- secalert@redhat.com
EPSS moved from 82.9% on 21 September 2026 to 96.5% on 30 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
CISA notes
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines. This vulnerability could affect an open-source component, third-party library, protocol, or proprietary implementation that could be used by different products. For more information, please see: https://cwiki.apache.org/confluence/display/WW/S2-032 ; ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2016-3081
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- http://packetstormsecurity.com/files/136856/Apache-Struts-2.3.28-Dynamic-Method-Invocation-Remote-Code-Execution.htmlExploit, Third Party Advisory
- http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20160527-01-struts2-enThird Party Advisory
- http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.htmlPatch, Third Party Advisory
- http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.htmlThird Party Advisory
- http://www.rapid7.com/db/modules/exploit/linux/http/struts_dmi_execThird Party Advisory, Broken Link
- http://www.rapid7.com/db/modules/exploit/multi/http/struts_dmi_execThird Party Advisory
- http://www.securityfocus.com/bid/87327Third Party Advisory, VDB Entry
- http://www.securityfocus.com/bid/91787Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1035665Third Party Advisory, VDB Entry
- https://struts.apache.org/docs/s2-032.htmlPatch, Vendor Advisory
- https://www.exploit-db.com/exploits/39756/Exploit, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/136856/Apache-Struts-2.3.28-Dynamic-Method-Invocation-Remote-Code-Execution.htmlExploit, Third Party Advisory
- http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20160527-01-struts2-enThird Party Advisory
- http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.htmlPatch, Third Party Advisory
- http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.htmlThird Party Advisory
- http://www.rapid7.com/db/modules/exploit/linux/http/struts_dmi_execThird Party Advisory, Broken Link
- http://www.rapid7.com/db/modules/exploit/multi/http/struts_dmi_execThird Party Advisory
- http://www.securityfocus.com/bid/87327Third Party Advisory, VDB Entry
- http://www.securityfocus.com/bid/91787Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1035665Third Party Advisory, VDB Entry
- https://struts.apache.org/docs/s2-032.htmlPatch, Vendor Advisory
- https://www.exploit-db.com/exploits/39756/Exploit, Third Party Advisory, VDB Entry
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-3081US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.