CVSS 3.1
9.8 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HCVE-2019-11929
Insufficient boundary checks when formatting numbers in number_format allows read/write access to out-of-bounds memory, potentially leading to remote code execution. This issue affects HHVM versions prior to 3.30.10, all versions between 4.0.0 and 4.8.5, all versions between 4.9.0 and 4.18.2, and versions 4.19.0, 4.19.1, 4.20.0, 4.20.1, 4.20.2, 4.21.0, 4.22.0, 4.23.0.
Severity
- EPSS
- 4.0% chance of exploitation in the next 30 days; higher than 90% of CVEs (scores of 2026-10-31)
- CWE
- CWE-119
- Published
- Modified
- Record from
- the NVD, synced
Affected
- facebook:hhvm
References
- https://github.com/facebook/hhvm/commit/dbeb9a56a638e3fdcef8b691c2a2967132dae692
- https://hhvm.com/blog/2019/09/25/security-update.html
- https://www.facebook.com/security/advisories/cve-2019-11929
- https://github.com/facebook/hhvm/commit/dbeb9a56a638e3fdcef8b691c2a2967132dae692
- https://hhvm.com/blog/2019/09/25/security-update.html