PatchTheCVECVE-2015-5639: niconico App for iOS before 6.38 does not verify SSL certificates which could allow remote attackers to execut
CVE-2015-5639 is a high-severity flaw (CVSS 7.4) affecting niconico. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
niconico App for iOS before 6.38 does not verify SSL certificates which could allow remote attackers to execute man-in-the-middle attacks.
Why this priority
- High severity
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.4 (High) |
| Attack vector | Network (remote) |
| Attack complexity | High |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.9% (top 39%) |
| CISA exploited list | No |
| Weakness | CWE-295 |
| Published | 2017-10-10 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2015-5639?
niconico: upgrade to newer than 6.37. Exact commands for each OS are on this page.
Is CVE-2015-5639 being exploited?
CVE-2015-5639 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2015-5639 affect?
CVE-2015-5639 affects niconico. Severity is high (CVSS 7.4). niconico App for iOS before 6.38 does not verify SSL certificates which could allow remote attackers to execute man-in-the-middle attacks.
How urgent is CVE-2015-5639?
Priority 46/100. High severity; Remotely exploitable, no login, no user action