IP Phone 8821 Firmware vulnerabilitiesAnd the versions its exploited flaws hit.

Product1 known exploited13 versions
The short answer

IP Phone 8821 Firmware is made by Cisco. We track 10 published vulnerabilities in it, across 13 versions. 1 of them is on the list of flaws known to be exploited, the newest added on 3 November 2021. If you run IP Phone 8821 Firmware, check your version against the exploited flaws below and patch those first.

Check your version

The most recent IP Phone 8821 Firmware flaw added to the known-exploited list is CVE-2020-3161, on 3 November 2021. We keep watching the known-exploited list.

Versions

Which versions of IP Phone 8821 Firmware do the exploited flaws hit?

Each exploited flaw lists the versions it affects, as published by the vendor. Find your version, then patch.

  • CVE-2020-3161Exploited list, 3 Nov 2021

    Cisco IP Phones Web Server Remote Code Execution and Denial-of-Service Vulnerability

    10.3(1)es1411.0(1)11.0(5)sr1
Known exploited

Which IP Phone 8821 Firmware vulnerabilities are being exploited?

1 flaw is on the government list of vulnerabilities known to be exploited. These are the ones criminals are using now, so they go first, whatever their severity score says.

  1. 9.8
    CVE-2020-3161CriticalKnown exploited
    Cisco IP Phones Web Server Remote Code Execution and Denial-of-Service Vulnerability

    Cisco IP Phones contain an improper input validation vulnerability for HTTP requests.

    Chance of use84%Known exploited since3 Nov 2021
Exploit likelihood

Which IP Phone 8821 Firmware flaws are most likely to be used?

Ranked by the latest exploit-likelihood forecast: the chance each flaw is used in an attack in the next 30 days. A high severity score on its own doesn't tell you that. Flaws shared by many other makers' products are left out.

50% or more10% to 49%Under 10%
  1. 84%
    CVE-2020-3161CriticalKnown exploited

    A vulnerability in the web server for Cisco IP Phones could allow an unauthenticated, remote attacker to execute code with root privileges or cause a reload of an affected IP phone, resulting in a denial of service...

    CVSS9.8Published15 Apr 2020
  2. 6.5%

    An issue was discovered in the kernel in NetBSD 7.1.

    CVSS5.3Published11 May 2021
  3. 3.6%

    The 802.11 standard that underpins Wi-Fi Protected Access (WPA, WPA2, and WPA3) and Wired Equivalent Privacy (WEP) doesn't require that the A-MSDU flag in the plaintext QoS header field is authenticated.

    CVSS3.5Published11 May 2021
  4. 3.1%

    A vulnerability in the web-based management interface of Session Initiation Protocol (SIP) Software for Cisco IP Phone 7800 Series and Cisco IP Phone 8800 Series could allow an unauthenticated, remote attacker to...

    CVSS9.8Published22 Mar 2019
  5. 1.9%

    A vulnerability in the web-based management interface of Session Initiation Protocol (SIP) Software for Cisco IP Phone 8800 Series could allow an unauthenticated, remote attacker to bypass authorization, access...

    CVSS7.5Published22 Mar 2019
  6. 1.4%

    A vulnerability in the web-based management interface of Session Initiation Protocol (SIP) Software for Cisco IP Phone 8800 Series could allow an authenticated, remote attacker to write arbitrary files to the filesystem.

    CVSS6.5Published22 Mar 2019
  7. 0.7%

    A vulnerability in the web-based management interface of Session Initiation Protocol (SIP) Software for Cisco IP Phone 8800 Series could allow an unauthenticated, remote attacker to conduct a cross-site request...

    CVSS8.8Published22 Mar 2019
  8. 0.6%

    A vulnerability in the web-based management interface of Cisco IP Phone 7800 and 8800 Series Phones could allow an unauthenticated, remote attacker to bypass authentication on an affected device.

    CVSS6.5Published20 Jan 2023
Precursor Intelligence

Running IP Phone 8821 Firmware? We'll keep checking.

Looking flaws up one at a time doesn't scale. Tell us what you run once, and we tell you which flaws matter to you, in what order, and keep watching for new ones.

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FAQ

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We track 10 published vulnerabilities listed under the name IP Phone 8821 Firmware, across 13 versions. The most recent IP Phone 8821 Firmware flaw added to the known-exploited list is CVE-2020-3161, on 3 November 2021.

1 is on the list of flaws known to be exploited. The most recently added is CVE-2020-3161.

Each flaw names its own versions, usually as ranges. The newest, CVE-2020-3161, affects 10.3(1)es14, 11.0(1), 11.0(5)sr1. The versions for every exploited flaw are listed on this page.

Create a Precursor Intelligence account and track IP Phone 8821 Firmware. We match it against every published flaw, give each one a risk score from 0 to 100 and keep watching, so you hear about new ones as soon as we know, by email, in the app or by webhook.