8.0High
CVE-2026-86185
Bilibili Desktop through 1.18.0 disables TLS certificate verification process-wide and executes unsigned remote JavaScript configuration without integrity checks. An attacker in an on-path network position can intercept configuration fetches, inject arbitrary JavaScript executed in the renderer with access to the privileged IPC bridge, and execute system commands or steal login credentials.
What this means for your business
- An attacker can use it from inside the same network, without a login, but only after tricking someone into an action such as opening a file or a link.
- FIRST's prediction model gives it a 0.1% chance of attack attempts being seen in the next 30 days, ranking above 1% of all known flaws.
What to do
- 1Ask your IT team or provider whether any of your systems use the affected product.
- 2If you do, follow the vendor's guidance. No patch reference has been published yet.
Not sure if your company is exposed?
Fastnexa’s certified penetration testers can check whether attackers could use this flaw, or others like it, against your websites, apps and network. The full test is free for our first 10 founding clients until 31 December 2026.
Scoring
- CVSS
- 8.0 (v3.1)
- Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H- CVSS v4
- 8.6
- Weakness
- CWE-295
- Assigned by
- disclosure@vulncheck.com
Dates
- Published
- 2026-09-05
- Last modified
- 2026-09-08
- Sources
- NVD
References
- https://app.bilibili.com/
- https://github.com/LeoWSY-hashblue/bilibili-desktop-tls-disabled-rce
- https://github.com/LeoWSY-hashblue/bilibili-desktop-tls-disabled-rce/blob/main/advisory.md
- https://www.vulncheck.com/advisories/bilibili-desktop-through-1.18.0-remote-code-execution-via-tls-verification-bypass