Ip Phone 8821-Ex Firmware
by Cisco
Standard maintenance is sufficient
Ip Phone 8821-Ex Firmware 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
16.7%
Confirmed actively exploited (CISA)
16.7%
Public exploit code available
0.0%
Based on 6 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-2020-3161 | 9.8 | 77.3% | Yes |
| CVE-2019-1716 | 7.5 | 7.3% | — |
| CVE-2019-1763 | 7.5 | 1.1% | — |
| CVE-2023-20018 | 8.6 | 0.4% | — |
| CVE-2019-1764 | 8.1 | 0.2% | — |
| CVE-2019-1765 | 8.1 | 0.1% | — |
11
/ 100
low-risk
Active Threat
6/50 · Minimal
Exploit Availability
5/50 · Minimal
Score uses Wilson score intervals to account for sample size. Products with few CVEs are scored conservatively.