SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityAnalyzed

CVE-2013-2251

Apache Struts Improper Input Validation Vulnerability

KEVEXPLOIT ×2 ✓CRITICAL 9.8EPSS 100.0%

Does this matter?

Known to be exploited in the wild (CISA KEV, CISA remediation deadline 15 April 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.

Description

Apache Struts 2.0.0 through 2.3.15 allows remote attackers to execute arbitrary OGNL expressions via a parameter with a crafted (1) action:, (2) redirect:, or (3) redirectAction: prefix.

CVSS 3.1
9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
100.00% probability · 100th percentile
Public exploits
2 in Exploit-DB · verified · first 27 July 2013
CISA KEV
Listed 25 March 2022 · due 15 April 2022
Weakness
CWE-74
Affected
apache/archiva · apache/struts · fujitsu/interstage business process manager analytics · oracle/siebel apps - e-billing
Source
secalert@redhat.com
EPSS trend
0%50%100%30 October 2026: 100.00%30 October 202630 October 2026

EPSS 100.0% since 30 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

CISA notes

Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2013-2251

Public exploits (2)

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.

EDB-IDTitleTypePublishedVerified
EDB-44583source ↗Apache Struts2 2.0.0 < 2.3.15 - Prefixed Parameters OGNL Injectionmultiple · Takeshi Teradawebapps14 January 2014yes
EDB-27135source ↗Apache Struts 2 - DefaultActionMapper Prefixes OGNL Code Execution (Metasploit)multiple · Metasploitremote27 July 2013yes

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.