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CVE-2017-9787

28
FAUCET Score

CVE-2017-9787 is a denial-of-service (DoS) vulnerability affecting Apache Struts when using Spring AOP functionality to secure Struts actions. It carries a high CVSS score of 7.5, indicating a network-based attack with low complexity that can lead to high availability impact. While no public exploit code is readily available (Metasploit, Nuclei, ExploitDB), it has received some community discussion and media coverage, including a patch release from Oracle, suggesting it has garnered attention.

Impacted Technologies

VendorProductVersion(s)CPE
2.3.7CPE matchmatch criteria
cpe:2.3:a:apache:struts:2.3.7:*:*:*:*:*:*:*
2.3.8CPE matchmatch criteria
cpe:2.3:a:apache:struts:2.3.8:*:*:*:*:*:*:*
2.3.9CPE matchmatch criteria
cpe:2.3:a:apache:struts:2.3.9:*:*:*:*:*:*:*
2.3.10CPE matchmatch criteria
cpe:2.3:a:apache:struts:2.3.10:*:*:*:*:*:*:*
2.3.11CPE matchmatch criteria
cpe:2.3:a:apache:struts:2.3.11:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
9.71%
Probability of exploitation in next 30 days
EPSS Percentile
95.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0971 is in the 92nd percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

mavenpatch availablevia ghsa
Product: org.apache.struts:struts2-coreFixed in: 2.5.12
mavenpatch availablevia ghsa
Product: org.apache.struts:struts2-coreFixed in: 2.3.33

Vendor Advisories (2)

mavenGHSA-8mr5-h28g-36qxhigh

Spring AOP functionality (Struts) vulnerable to DoS attack

Oct 16, 2018
redhatCVE-2017-9787Low

struts: Denial of service when using a Spring AOP functionality

Aug 11, 2017

References

lists.apache.org / thread.html/3795c4dd46d9ec75f4a6eb9eca11c11edd3e796c6c1fd7b17b5dc50d%40%3Cannouncements.struts.apache.org%3E
lists.apache.org / thread.html/de3d325f0433cd3b42258b6a302c0d7a72b69eedc1480ed561d3b065%40%3Cannouncements.struts.apache.org%3E
security.netapp.com / advisory/ntap-20180706-0002
struts.apache.org / docs/s2-049.html
Vendor Advisory
oracle.com / technetwork/security-advisory/alert-cve-2017-9805-3889403.html
securityfocus.com / bid/99562
Third Party AdvisoryVDB Entry
securitytracker.com / id/1039115