PatchTheCVEip phone 7821 firmware vulnerabilities and fixes
Recent CVEs affecting ip phone 7821 firmware, with upgrade or downgrade steps. 1 tracked.
Also searched as: ipphone7821firmware.
ip phone 7821 firmware has 1 tracked vulnerability, 0 critical. A fixed release or vendor patch exists for 0. Most recent: 2025-09-03. Highest priority: CVE-2025-20335 (score 31/100).
- CVE-2025-20335 MEDIUM 5.3 MITIGATE MITIGATE A vulnerability in the directory permissions of Cisco Desk Phone 9800 Series, Cisco IP Phone 7800 and 8800 Ser
FAQ
How do I fix ip phone 7821 firmware vulnerabilities?
Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.
Is ip phone 7821 firmware being exploited right now?
None of the tracked ip phone 7821 firmware CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.
Which ip phone 7821 firmware CVE should I patch first?
CVE-2025-20335 currently ranks highest (31/100): A vulnerability in the directory permissions of Cisco Desk Phone 9800 Series, Cisco IP Phone 7800 and 8800 Ser.