CVE-2020-17530
KEVApache Struts Remote Code Execution Vulnerability
Description
Forced Object-Graph Navigation Language (OGNL) evaluation in Apache Struts, when evaluated on raw user input in tag attributes, can lead to remote code execution.
Forced OGNL evaluation, when evaluated on raw user input in tag attributes, may lead to remote code execution. Affected software : Apache Struts 2.0.0 - Struts 2.5.25.
CVSS 3.1 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HPublishedDec 11, 2020
Last modifiedJun 17, 2026
Added to KEVNov 3, 2021
Remediation dueMay 3, 2022
References
- jvn.jp/en/jp/JVN43969166/index.htmlThird Party Advisory
- packetstormsecurity.com/files/160721/Apache-Struts-2-Forced-Multi-OGNL-Evaluation.htmlThird Party AdvisoryVDB Entry
- openwall.com/lists/oss-security/2022/04/12/6Mailing ListThird Party Advisory
- cwiki.apache.org/confluence/display/WW/S2-061Vendor Advisory
- security.netapp.com/advisory/ntap-20210115-0005/PatchThird Party Advisory
- oracle.com//security-alerts/cpujul2021.htmlPatchThird Party Advisory
- oracle.com/security-alerts/cpuApr2021.htmlPatchThird Party Advisory
- oracle.com/security-alerts/cpuapr2022.htmlThird Party Advisory
- oracle.com/security-alerts/cpujan2021.htmlPatchThird Party Advisory
- oracle.com/security-alerts/cpujan2022.htmlPatchThird Party Advisory
- oracle.com/security-alerts/cpuoct2021.htmlPatchThird Party Advisory
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-17530US Government Resource
0 recent articles mention this CVE
89
Risk assessment · Critical
Actively exploited. Patch immediately.
- Exploitation
- Confirmed in the wild (CISA KEV)
- Federal remediation deadline
- Overdue by 1637 days
- CVSS
- 9.8 CRITICAL
- EPSS (30-day exploit probability)
- 96.3% · top 1% of all CVEs
- Weakness
- CWE-917
- Attack vector
- Network, remotely reachable
- Preconditions
- No privileges and no user interaction
Recommended actions
- 1.Apply updates per vendor instructions.
- 2.Treat as emergency change: patch or isolate internet-facing instances first.
- 3.Review exposure: confirm which instances are reachable from the internet and restrict access until patched.
- 4.Hunt for compromise: review logs for the disclosure window, not just from the patch date.
Assessment is derived automatically from the live signals above; verify against your own asset inventory.