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CISA KEV · Known exploitedCritical

CVE-2020-17530

Apache Struts

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
9.8
EPSS
95.6%
99.9% percentile
CISA KEV
Listed
Published
2020.12.11
PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV
Exploit probability95.6%
Technical severityCVSS 9.8

Vulnerability overview

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.

Affected product and versions

Product
Apache Struts
Affected versions
Struts 2.0.0 - Struts 2.5.25, >= 2.0.0 < 2.5.30, 12.2.1.3.0, 12.2.1.4.0, 8.0.0, 8.1.0, 8.2.0, 8.2.3, 12.5.0, 12.0.0.3.0, 8.0.3, 8.0.6, 5.6, 8.0.23
Fixed versions
2.5.30

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
CISA required action

Apply updates per vendor instructions.

Due date: 2022.05.03
  1. 1
    Identify

    Confirm that Apache Struts and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-917
KEV added
2021.11.03
Ransomware use
미확인
CVE-2020-17530 — Apache Struts | SECUFOCUS NOW