CVE-2019-11929 is a critical vulnerability in Facebook HHVM, affecting multiple versions prior to 3.30.10 and various 4.x.x series. It stems from insufficient boundary checks in the number_format function, allowing out-of-bounds memory read/write access. This flaw carries a CVSS score of 9.8 (CRITICAL) due to its network-exploitable nature, low attack complexity, and potential for complete compromise (Confidentiality, Integrity, Availability). While no active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion has been observed, the high FAUCET Risk Score of 84/100 indicates its severe potential.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 3.30.10CPE match | cpe:2.3:a:facebook:hhvm:*:*:*:*:*:*:*:* | ||
< 3.30.10CPE matchmatch criteria | cpe:2.3:a:facebook:hhvm:*:*:*:*:*:*:*:* | ||
>= 4.0.0, <= 4.8.5CPE matchmatch criteria | cpe:2.3:a:facebook:hhvm:*:*:*:*:*:*:*:* | ||
>= 4.9.0, <= 4.18.2CPE matchmatch criteria | cpe:2.3:a:facebook:hhvm:*:*:*:*:*:*:*:* | ||
4.19.0CPE matchmatch criteria | cpe:2.3:a:facebook:hhvm:4.19.0:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.