Skip to content
Fencer Vulns
critical 9.8

CVE-2019-7249 json

In Keybase before 2.12.6 on macOS, the move RPC to the Helper was susceptible to time-to-check-time-to-use bugs and would also allow one us…

published 2019-01-31 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-16793

cvss
9.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.5%
EPSS 2.5% chance of exploitation in 30 days, percentile 84%
public exploits
0
none known

Summary

In Keybase before 2.12.6 on macOS, the move RPC to the Helper was susceptible to time-to-check-time-to-use bugs and would also allow one user of the system (who didn't have root access) to tamper with another's installs.

Patch / fix

  • keybase keybase 2.12.6

Exploit prediction

2.51% chance of exploitation in the next 30 days, higher than 84% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • keybase.io https://keybase.io/docs/secadv/kb004 referenced PoC, tagged "exploit" by a source, unverified
  • hackerone.com https://hackerone.com/reports/471739 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 9.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.