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CVE-2019-11929
Insufficient boundary checks when formatting numbers in number_format allows read/write access to out-of-bounds memory, potentially…
Critical9.8EPSS 4.0%
- Published
- Updated
- Reserved
- Assigned by
Description
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 4.0% · top 9.4% of all CVEs (6 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Weakness
Affected products
- affected 4.24.0
- affected 4.23.2
- affected 4.23.0 – < unspecified
- affected 4.22.1
- affected 4.22.0 – < unspecified
- affected 4.21.1
- affected 4.21.0 – < unspecified
- affected 4.20.3
- affected 4.20.0 – < unspecified
- affected 4.19.2
- affected 4.19.0 – < unspecified
- affected 4.18.3
- affected 4.9.0 – < unspecified
- affected 4.8.5
- affected 4.0.0 – < unspecified
- affected 3.30.11
- affected unspecified – ≤ 3.30.10
References (3)
- https://github.com/facebook/hhvm/commit/dbeb9a56a638e3fdcef8b691c2a2967132dae692 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://hhvm.com/blog/2019/09/25/security-update.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://www.facebook.com/security/advisories/cve-2019-11929 (opens in a new tab)x_refsource_CONFIRMx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://trackcve.app/cve/CVE-2019-11929)Record last updated .