CVE-2013-4699

The Yahoo! Japan Yafuoku! application 4.3.0 and earlier for iOS and Android does not verify X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate.

Published: 2013-08-21 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2013-4699 is rated Low Risk (33.6/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.13%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2013-4699

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-03-30 0.16% 0.13% -0.03%
2 2025-03-29 0.06% 0.16% +0.10%
3 2023-03-07 — 0.06% —

Full EPSS history (4 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2013-4699

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.8 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 8.6 4.9 [email protected]

Weakness enumeration for CVE-2013-4699

Affected software / configurations for CVE-2013-4699

Vendor Product Version Raw CPE
yahoo yafuoku\! <= 4.3.0 cpe:2.3:a:yahoo:yafuoku\!:*:*:*:*:*:android:*:*
yahoo yafuoku\! <= 4.3.0 cpe:2.3:a:yahoo:yafuoku\!:*:*:*:*:*:iphone_os:*:*

References for CVE-2013-4699

cvelogic Threat Intelligence