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CVE-2017-5911

16
FAUCET Score

CVE-2017-5911 describes a critical vulnerability in the Banco Santander Mexico SA Supermovil iOS app (versions 3.5 through 3.7) where it fails to properly validate X.509 certificates from SSL servers. This flaw enables man-in-the-middle attackers to spoof legitimate servers using crafted certificates, thereby intercepting and compromising sensitive user information. Rated as MEDIUM severity with a CVSS score of 5.9, the vulnerability has a high confidentiality impact and can be exploited remotely with high attack complexity. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
3.5CPE matchmatch criteria
cpe:2.3:a:banco_santander_mexico_sa:supermovil:3.5:*:*:*:*:iphone_os:*:*
3.6CPE matchmatch criteria
cpe:2.3:a:banco_santander_mexico_sa:supermovil:3.6:*:*:*:*:iphone_os:*:*
3.7CPE matchmatch criteria
cpe:2.3:a:banco_santander_mexico_sa:supermovil:3.7:*:*:*:*: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
0.49%
Probability of exploitation in next 30 days
EPSS Percentile
39.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0049 is in the 5th percentile among its peer group of 19,956 CVEs.

Social Chatter

No social media mentions found for this CVE.

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