Hhvm
by Facebook
Standard maintenance is sufficient
Hhvm has low exploitation rates. Attackers rarely target this software's known vulnerabilities.
What to do
- Keep automatic updates enabled
- No urgent action needed
- Review periodically as part of normal maintenance
What Attackers Target
Vulnerabilities with high exploit probability
0.0%
Confirmed actively exploited (CISA)
0.0%
Public exploit code available
0.0%
Based on 40 known vulnerabilities. Percentages show the proportion that are actively dangerous — a low percentage means most vulnerabilities in this product are not being exploited.
Most Dangerous Vulnerabilities
| CVE | CVSS | Exploit Probability | Confirmed |
|---|---|---|---|
| CVE-2021-24036 | 9.8 | 6.2% | — |
| CVE-2019-11929 | 9.8 | 4.7% | — |
| CVE-2019-11930 | 9.8 | 2.5% | — |
| CVE-2019-3556 | 8.1 | 1.7% | — |
| CVE-2016-1000109 | 5.3 | 1.6% | — |
| CVE-2019-11926 | 9.8 | 1.0% | — |
| CVE-2019-11925 | 9.8 | 1.0% | — |
| CVE-2016-6870 | 9.8 | 1.0% | — |
| CVE-2018-6345 | 9.8 | 0.9% | — |
| CVE-2020-1898 | 7.5 | 0.8% | — |
| CVE-2020-1916 | 9.8 | 0.8% | — |
| CVE-2020-1900 | 9.8 | 0.8% | — |
| CVE-2020-1917 | 9.8 | 0.7% | — |
| CVE-2019-3557 | 9.8 | 0.7% | — |
| CVE-2019-3561 | 9.8 | 0.7% | — |
| CVE-2018-6335 | 7.5 | 0.7% | — |
| CVE-2019-11935 | 9.8 | 0.6% | — |
| CVE-2019-11936 | 9.8 | 0.6% | — |
| CVE-2018-6334 | 9.8 | 0.6% | — |
| CVE-2020-1892 | 8.1 | 0.6% | — |
0
/ 100
low-risk
Active Threat
0/50 · Minimal
Exploit Availability
0/50 · Minimal
Score uses Wilson score intervals to account for sample size. Products with few CVEs are scored conservatively.