CVE-2019-7386 — A Denial of Service issue has been discovered in the Gecko component of KaiOS 2

A Denial of Service issue has been discovered in the Gecko component of KaiOS 2.5 10.05 (platform 48.0.a2) on Nokia 8810 4G devices. When a crafted web page is visited with the internal browser, the Gecko process crashes with a segfault. Successful exploitation could lead to the

01What is this vulnerability?

A Denial of Service issue has been discovered in the Gecko component of KaiOS 2.5 10.05 (platform 48.0.a2) on Nokia 8810 4G devices. When a crafted web page is visited with the internal browser, the Gecko process crashes with a segfault. Successful exploitation could lead to the remote code execution on the device.

02Affected products

No structured affected-product list available — see references below for vendor advisories.

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2019-03-21T16:01:12.297
• Last modified: 2026-06-05T18:16:52.403

09References

• packetstormsecurity.com — http://packetstormsecurity.com/files/151651/Nokia-8810-Denial-Of-Service.html
• seclists.org — http://seclists.org/fulldisclosure/2019/Feb/35
• www.breakthesec.com — http://www.breakthesec.com
• www.breakthesec.com — http://www.breakthesec.com/search/label/0day
• developer.kaiostech.com — https://developer.kaiostech.com/bugzilla-reports/report_141873.html
• developer.kaiostech.com — https://developer.kaiostech.com/bugzilla-reports/report_58204.html
• s3curityb3ast.github.io — https://s3curityb3ast.github.io
• s3curityb3ast.github.io — https://s3curityb3ast.github.io/KSA-Dev-007.md
• packetstormsecurity.com — http://packetstormsecurity.com/files/151651/Nokia-8810-Denial-Of-Service.html
• seclists.org — http://seclists.org/fulldisclosure/2019/Feb/35