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CVE-2017-9421

20
FAUCET Score

CVE-2017-9421 describes an authentication bypass vulnerability in Accellion kiteworks versions prior to 2017.01.00. This flaw allows remote attackers to execute specific API calls by leveraging a gathered token through a POST request to /oauth/token, impersonating a legitimate web user. Rated with a CVSS score of 6.5 (Medium), this vulnerability has a low attack complexity and requires no user interaction, making it easily exploitable. The potential impact includes limited confidentiality and integrity compromise, as attackers can access or modify some user data. There is no evidence of active exploitation, nor are there publicly available exploit modules in Metasploit, Nuclei, or ExploitDB. The vulnerability has garnered minimal community discussion and media coverage, suggesting a low profile despite its potential impact.

Impacted Technologies

VendorProductVersion(s)CPE
< 2017.01.00CPE matchmatch criteria
cpe:2.3:a:accellion:kiteworks:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
2.5
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.06%
Probability of exploitation in next 30 days
EPSS Percentile
61.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0106 is in the 39th percentile among its peer group of 23,725 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

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

Remediation

Remediation records are not available for this CVE.

References

github.com / jer1nj0y/Vulns/blob/master/Kiteworks%20Vulnerability
Third Party Advisory