Zulip Server
by Zulip
Standard maintenance is sufficient
Zulip Server 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 39 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-2020-15070 | 8.8 | 0.7% | — |
| CVE-2019-16215 | 6.5 | 0.5% | — |
| CVE-2019-18933 | 9.8 | 0.4% | — |
| CVE-2022-31134 | 4.9 | 0.4% | — |
| CVE-2023-47642 | 4.3 | 0.4% | — |
| CVE-2020-12759 | 6.1 | 0.4% | — |
| CVE-2020-9445 | 6.1 | 0.4% | — |
| CVE-2023-33186 | 8.2 | 0.3% | — |
| CVE-2022-23656 | 4.6 | 0.3% | — |
| CVE-2020-10935 | 5.4 | 0.3% | — |
| CVE-2023-22735 | 4.4 | 0.3% | — |
| CVE-2019-19775 | 6.1 | 0.3% | — |
| CVE-2018-9986 | 6.1 | 0.3% | — |
| CVE-2018-9990 | 6.1 | 0.3% | — |
| CVE-2018-9987 | 6.1 | 0.3% | — |
| CVE-2019-16216 | 5.4 | 0.3% | — |
| CVE-2018-9999 | 5.4 | 0.3% | — |
| CVE-2025-31478 | 8.2 | 0.2% | — |
| CVE-2017-0910 | 8.8 | 0.2% | — |
| CVE-2025-27149 | 2.7 | 0.2% | — |
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.