How severe is CVE-2013-4699?

CVE-2013-4699 has a CVSS 2.0 base score of 5.8, rated medium severity.

Is CVE-2013-4699 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-4699?

CVE-2013-4699 primarily affects Yahoo Yafuoku!. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2013-4699?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2013-4699 published?

CVE-2013-4699 was published on 2013-08-21 and last updated on 2026-06-16.

CVE-2013-4699

CVE-2013-4699 is a medium-severity vulnerability in Yahoo Yafuoku! with a CVSS 2.0 base score of 5.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-310.

Key facts

Severity: Medium (CVSS 2.0 base score 5.8)
EPSS exploit prediction: 1% (40th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-310
Affected product: Yahoo Yafuoku!
Published: 2013-08-21
Last modified: 2026-06-16

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2013-4699?: CVE-2013-4699 has a CVSS 2.0 base score of 5.8, rated medium severity.
Is CVE-2013-4699 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-4699?: CVE-2013-4699 primarily affects Yahoo Yafuoku!. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-4699?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2013-4699 published?: CVE-2013-4699 was published on 2013-08-21 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:yahoo:yafuoku\!:*:*:*:*:*:android:*:*
cpe:2.3:a:yahoo:yafuoku\!:*:*:*:*:*:iphone_os:*:*

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