CVE-2019-16263
CVSS v3
7.4
HIGH
EPSS Score
1.0 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
The Twitter Kit framework through 3.4.2 for iOS does not properly validate the api.twitter.com SSL certificate. Although the certificate chain must contain one of a set of pinned certificates, there are certain implementation errors such as a lack of hostname verification. NOTE: this is an end-of-life product.
Technical details
- Published
- 2019-10-07
Frequently asked questions
What is CVE-2019-16263?
The Twitter Kit framework through 3.4.2 for iOS does not properly validate the api.twitter.com SSL certificate. Although the certificate chain must contain one of a set of pinned certificates, there are certain implementation errors such as a lack of hostname verification. NOTE: this is an end-of-life product.
Is CVE-2019-16263 actively exploited?
Active exploitation of CVE-2019-16263 has not been confirmed. Its EPSS score was 1.0% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2019-16263?
CVE-2019-16263 has a CVSS v3 base score of 7.4 (HIGH severity).
Is CVE-2019-16263 affecting your environment?
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