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CVE-2016-2351

31
FAUCET Score

CVE-2016-2351 describes a critical SQL injection vulnerability in the Accellion File Transfer Appliance (FTA) versions prior to FTA_9_12_40. Specifically, it allows remote attackers to execute arbitrary SQL commands by manipulating the client_id parameter within the home/seos/courier/security_key2.api endpoint. This vulnerability carries a CVSS score of 9.8 (CRITICAL), indicating a severe risk. It can be exploited remotely over the network with low attack complexity and no user interaction, potentially leading to complete compromise of confidentiality, integrity, and availability of the affected system. While there is no evidence of active exploitation (not in KEV) and no public exploit code in Metasploit, Nuclei, or ExploitDB, the vulnerability has garnered significant community attention with 11 mentions in discussions and one media article, suggesting awareness among security researchers.

Impacted Technologies

VendorProductVersion(s)CPE
<= 9_11_210CPE matchmatch criteria
cpe:2.3:a:accellion:file_transfer_appliance:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.58%
Probability of exploitation in next 30 days
EPSS Percentile
72.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0158 is in the 60th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

devco.re / blog/2016/04/21/how-I-hacked-facebook-and-found-someones-backdoor-script-eng-ver
Exploit
kb.cert.org / vuls/id/505560
Third Party AdvisoryUS Government Resource