CVE-2020-17530

Exp

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.

Published: 2020-12-11 Last update: 2025-10-27 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-17530 is rated Critical Active Threat (100/100): CVSS Critical severity, with high exploitation likelihood (EPSS 95.92%, 100th percentile). CISA KEV confirms active exploitation (added 2021-11-03) affecting Apache / Struts. a weakness (CWE-917) Unauthenticated remote administrative access may be possible. EPSS rose +1.55% over the last day, indicating growing attacker interest. The CISA remediation deadline has passed—treat as an emergency patch priority.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

CISA KEV Record for CVE-2020-17530

Name: Apache Struts Remote Code Execution Vulnerability · CISA KEV detail

Exploit added: 2021-11-03

Action due: 2022-05-03

Required action: Apply updates per vendor instructions.

Exploit prediction scoring system (EPSS) score for CVE-2020-17530

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 94.38% 95.92% +1.55%
2 2026-03-04 94.31% 94.38% +0.07%
3 2026-03-01 — 94.31% —

Full EPSS history (26 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-17530

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 134c704f-9b21-4f2e-91b3-4a467353bcc0
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2020-17530

GitHub Security Advisory for CVE-2020-17530

GHSA-jc35-q369-45pv · Severity: critical · Ecosystem: maven — Remote code execution in Apache Struts

OS Trackers for CVE-2020-17530

vendor priority summary link
redhat high — https://access.redhat.com/security/cve/CVE-2020-17530
suse high CVE-2020-17530 severity important: SUSE including 1 source package names (struts), 2 product×package rows across 2 product lines (SUSE Manager Server Module 4.0, SUSE Manager Server Module 4.1): Known Not Affected 2. https://www.suse.com/security/cve/CVE-2020-17530/
ubuntu medium CVE-2020-17530 medium priority: Ubuntu including 1 source packages (libstruts1.2-java), 6 status rows across 6 suites (bionic, focal, groovy, trusty, upstream, xenial): DNE 5, not-affected 1. https://ubuntu.com/security/CVE-2020-17530

Affected software / configurations for CVE-2020-17530

Vendor Product Version Raw CPE
apache struts >= 2.0.0, < 2.5.30 cpe:2.3:a:apache:struts:*:*:*:*:*:*:*:*
oracle business_intelligence 12.2.1.3.0 cpe:2.3:a:oracle:business_intelligence:12.2.1.3.0:*:*:*:enterprise:*:*:*
oracle business_intelligence 12.2.1.4.0 cpe:2.3:a:oracle:business_intelligence:12.2.1.4.0:*:*:*:enterprise:*:*:*
oracle communications_diameter_intelligence_hub 8.0.0 cpe:2.3:a:oracle:communications_diameter_intelligence_hub:8.0.0:*:*:*:*:*:*:*
oracle communications_diameter_intelligence_hub 8.1.0 cpe:2.3:a:oracle:communications_diameter_intelligence_hub:8.1.0:*:*:*:*:*:*:*
oracle communications_diameter_intelligence_hub 8.2.0 cpe:2.3:a:oracle:communications_diameter_intelligence_hub:8.2.0:*:*:*:*:*:*:*
oracle communications_diameter_intelligence_hub 8.2.3 cpe:2.3:a:oracle:communications_diameter_intelligence_hub:8.2.3:*:*:*:*:*:*:*
oracle communications_policy_management 12.5.0 cpe:2.3:a:oracle:communications_policy_management:12.5.0:*:*:*:*:*:*:*
oracle communications_pricing_design_center 12.0.0.3.0 cpe:2.3:a:oracle:communications_pricing_design_center:12.0.0.3.0:*:*:*:*:*:*:*
oracle financial_services_data_integration_hub 8.0.3 cpe:2.3:a:oracle:financial_services_data_integration_hub:8.0.3:*:*:*:*:*:*:*
oracle financial_services_data_integration_hub 8.0.6 cpe:2.3:a:oracle:financial_services_data_integration_hub:8.0.6:*:*:*:*:*:*:*
oracle hospitality_opera_5 5.6 cpe:2.3:a:oracle:hospitality_opera_5:5.6:*:*:*:*:*:*:*
oracle mysql_enterprise_monitor 8.0.23 cpe:2.3:a:oracle:mysql_enterprise_monitor:8.0.23:*:*:*:*:*:*:*

References for CVE-2020-17530

URL Tags
http://jvn.jp/en/jp/JVN43969166/index.html Third Party Advisory
http://packetstormsecurity.com/files/160721/Apache-Struts-2-Forced-Multi-OGNL-Evaluation.html Third Party Advisory VDB Entry
http://www.openwall.com/lists/oss-security/2022/04/12/6 Mailing List Third Party Advisory
https://cwiki.apache.org/confluence/display/WW/S2-061 Vendor Advisory
https://security.netapp.com/advisory/ntap-20210115-0005/ Patch Third Party Advisory
https://www.oracle.com//security-alerts/cpujul2021.html Patch Third Party Advisory
https://www.oracle.com/security-alerts/cpuApr2021.html Patch Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.html Third Party Advisory
https://www.oracle.com/security-alerts/cpujan2021.html Patch Third Party Advisory
https://www.oracle.com/security-alerts/cpujan2022.html Patch Third Party Advisory
https://www.oracle.com/security-alerts/cpuoct2021.html Patch Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-17530 US Government Resource
cvelogic Threat Intelligence