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CVE-2017-3213

20
FAUCET Score

CVE-2017-3213 describes a critical vulnerability in the Think Mutual Bank Mobile Banking app 3.1.5 for iOS, where the application fails to properly validate X.509 certificates from SSL servers. This oversight enables man-in-the-middle (MITM) attackers to impersonate legitimate servers using crafted certificates, thereby intercepting and potentially exfiltrating sensitive user information. The vulnerability carries a CVSS score of 5.9 (MEDIUM), indicating a network-based attack with high confidentiality impact, but requiring high attack complexity. Although the attack does not require user interaction or privileges, its success hinges on the attacker's ability to execute a sophisticated MITM attack. Currently, there is no evidence of active exploitation, nor is exploit code publicly available in Metasploit, Nuclei, or ExploitDB. Community discussion and media coverage for this CVE are minimal, suggesting a low level of public awareness or attention.

Impacted Technologies

VendorProductVersion(s)CPE
3.1.5CPE matchmatch criteria
cpe:2.3:a:think_mutual_bank:think_mutual_bank_mobile_banking_app:3.1.5:*:*:*:*:iphone_os:*:*

CVSS Data

CVSS version used by this source: 3.0

5.9MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.2
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.86%
Probability of exploitation in next 30 days
EPSS Percentile
54.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0086 is in the 13th percentile among its peer group of 19,958 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 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

medium.com / %40chronic_9612/follow-up-76-popular-apps-confirmed-vulnerable-to-silent-interception-of-tls-protected-data-64185035029f
kb.cert.org / vuls/id/276408
Third Party AdvisoryUS Government Resource
securityfocus.com / bid/98308
Third Party AdvisoryVDB Entry