Cisco IP Phone 7800 and 8800 Series Cisco Discovery Protocol and Link Layer Discovery Protocol Denial of Service Vulnerability
Published Feb 21, 2019
6.5
MEDIUMCVSS 3.1
EPSS 0.64%
Description
A vulnerability in the Cisco Discovery Protocol or Link Layer Discovery Protocol (LLDP) implementation for the Cisco IP Phone 7800 and 8800 Series could allow an unauthenticated, adjacent attacker to cause an affected phone to reload unexpectedly, resulting in a temporary denial of service (DoS) condition. The vulnerability is due to missing length validation of certain Cisco Discovery Protocol or LLDP packet header fields. An attacker could exploit this vulnerability by sending a malicious Cisco Discovery Protocol or LLDP packet to the targeted phone. A successful exploit could allow the attacker to cause the affected phone to reload unexpectedly, resulting in a temporary DoS condition. Versions prior to 12.6(1)MN80 are affected.
Affected products
-
- Version unspecifiedStatusaffectedConstraints<12.6(1)MN80
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Cisco | Cisco IP Phone 8800 Series Software | n/a |
|
Configuration 1
- < 12.6\(1\)mn80
Running on/with
- n/a
Configuration 2
- < 12.6\(1\)mn80
Running on/with
- n/a
Configuration 3
- < 12.6\(1\)mn80
Running on/with
- n/a
Configuration 4
- < 12.6\(1\)mn80
Running on/with
- n/a
Configuration 5
- < 12.6\(1\)mn80
Running on/with
- n/a
Configuration 6
- < 12.6\(1\)mn80
Running on/with
- n/a
Configuration 7
- < 12.6\(1\)mn80
Running on/with
- n/a
Configuration 8
- < 12.6\(1\)mn80
Running on/with
- n/a
Configuration 9
- < 12.6\(1\)mn80
Running on/with
- n/a
Configuration 10
- < 12.6\(1\)mn80
Running on/with
- n/a
Configuration 11
- < 12.6\(1\)mn80
Running on/with
- n/a
Configuration 12
- < 12.6\(1\)mn80
Running on/with
- n/a
Configuration 13
- < 12.6\(1\)mn80
Running on/with
- n/a
Configuration 14
- < 12.6\(1\)mn80
Running on/with
- n/a
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AV:A/AC:L/Au:N/C:N/I:N/A:C
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Nov 21, 2024 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 0.64% (0.00640) | 48.81th | v5 (v2026.06.15) |
| Sep 20, 2026 | 0.64% (0.00640) | 49.23th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.05% (0.00054) | 22.20th | v3 (v2023.03.01) |
| Jul 13, 2024 | 0.05% (0.00054) | 22.11th | v3 (v2023.03.01) |
| Jun 10, 2024 | 0.07% (0.00066) | 28.89th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.07% (0.00066) | 26.88th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.40% (0.01404) | 49.02th | v2 (v2022.01.01) |
| Feb 3, 2022 | 3.40% (0.03396) | 67.40th | v1 |
| Jan 6, 2022 | 3.40% (0.03396) | 67.08th | v1 |
| Jan 5, 2022 | 0.78% (0.00777) | 52.24th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.78% (0.00777) | 0.00th | v1 |
References (2)
- http://www.securityfocus.com/bid/107104 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190220-cdp-lldp-dos vendor-advisoryx_refsource_CISCOVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/107104 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190220-cdp-lldp-dos | vendor-advisoryx_refsource_CISCOVendor Advisory |
Change history (0)
No recorded changes yet.