01 Record

CVE-2022-20846

Cisco IOS XR Software Cisco Discovery Protocol Buffer Overflow Vulnerability

MediumPUBLISHEDCNA: cisco

CNA base score4.3 CVSS v3.xCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

View raw JSON

02 Description

Cisco IOS XR Software Cisco Discovery Protocol Buffer Overflow Vulnerability

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

1.00% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 60.1% of scored records. A rank, not a probability.

NVD base score

4.3 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

NVD analysis status

Analyzed. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2024-11-15 15:32Z1 YR AGO

Last updated

2024-11-15 16:41Z1 YR AGO

Reserved

2021-11-02

Assigning CNA

cisco

Record state

PUBLISHED

Severity

Medium (CVSS 4.3)

CNA CVSS vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Weaknesses

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')Base

Data version

5.1

Document digest

690833c26dd8412e05876237e2bcd74ad14ec97ba6b5e77861e3249026b40a17

05 Affected products

VendorProductVersionsPlatforms

CiscoCisco IOS XR Software6.5.3, 6.5.29, 6.5.1, 6.6.1, 6.5.2, 6.5.92, 6.5.15, 6.6.2, 7.0.1, 6.6.25, 6.5.26, 6.6.11, 6.5.25, 6.5.28, 6.5.93, 6.6.12, 6.5.90, 7.0.0, 7.1.1, 7.0.90, 6.6.3, 6.7.1, 7.0.2, 7.1.15, 7.2.0, 7.2.1, 7.1.2, 6.7.2, 7.0.11, 7.0.12, 7.0.14, 7.1.25, 6.6.4, 7.2.12, 7.3.1, 7.1.3, 6.7.3, 7.4.1, 7.2.2, 6.7.4, 6.5.31, 7.3.15, 7.3.16, 6.8.1, 7.4.15, 6.5.32, 7.3.2, 7.5.1, 7.4.16, 7.3.27, 7.6.1, 7.5.2, 7.6.15, 7.5.12, 7.3.3, 6.8.2, 7.3.4, 7.4.2, 6.7.35, 6.9.1—

06 References

sec.cloudapps.cisco.comcisco-sa-xr-cdp-wnALzvT2https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-xr-cdp-wnALzvT2
sec.cloudapps.cisco.comhttps://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-bng-Gmg5Gxt</a></p><p>This advisory is part of the September 2022 release of the Cisco IOS XR Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see <a href="https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-74840">Cisco Event Response: September 2022 Semiannual Cisco IOS XR Software Security Advisory Bundled Publicationhttps://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-bng-Gmg5Gxt
sec.cloudapps.cisco.comhttps://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ncs4k-tl1-GNnLwC6</a></p><p>This advisory is part of the September 2022 release of the Cisco IOS XR Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see <a href="https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-74840">Cisco Event Response: September 2022 Semiannual Cisco IOS XR Software Security Advisory Bundled Publicationhttps://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ncs4k-tl1-GNnLwC6

01 Record index

CVE-2022-20846

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2022-20846

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References