Cisco IOS XR Software Cisco Discovery Protocol Buffer Overflow Vulnerability
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Low
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
A vulnerability in the Cisco Discovery Protocol implementation for Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause the Cisco Discovery Protocol process to reload on an affected device. This vulnerability is due to a heap buffer overflow in certain Cisco Discovery Protocol messages. An attacker could exploit this vulnerability by sending a malicious Cisco Discovery Protocol packet to an affected device. A successful exploit could allow the attacker to cause a heap overflow, which could cause the Cisco Discovery Protocol process to reload on the device. The bytes that can be written in the buffer overflow are restricted, which limits remote code execution.Note: Cisco Discovery Protocol is a Layer 2 protocol. To exploit this vulnerability, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent). Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.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 .
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Cisco | Cisco IOS XR Software | 6.5.3; 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 | — | No fix listed | CNA |
- Cisco IOS XR Software VendorCisco Affected 6.5.3; 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 Fixed in — No fix listed CNA
CPE configurations NVD · 60
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:cisco:ios_xr:6.5.1:*:*:*:*:*:*:* | 6.5.1 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:6.5.2:*:*:*:*:*:*:* | 6.5.2 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:6.5.3:*:*:*:*:*:*:* | 6.5.3 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:6.5.15:*:*:*:*:*:*:* | 6.5.15 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:6.5.25:*:*:*:*:*:*:* | 6.5.25 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:6.5.26:*:*:*:*:*:*:* | 6.5.26 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:6.5.28:*:*:*:*:*:*:* | 6.5.28 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:6.5.29:*:*:*:*:*:*:* | 6.5.29 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:6.5.31:*:*:*:*:*:*:* | 6.5.31 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:6.5.32:*:*:*:*:*:*:* | 6.5.32 | Vulnerable | Cisco |
- cpe:2.3:o:cisco:ios_xr:6.5.1:*:*:*:*:*:*:* Versions 6.5.1 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:6.5.2:*:*:*:*:*:*:* Versions 6.5.2 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:6.5.3:*:*:*:*:*:*:* Versions 6.5.3 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:6.5.15:*:*:*:*:*:*:* Versions 6.5.15 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:6.5.25:*:*:*:*:*:*:* Versions 6.5.25 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:6.5.26:*:*:*:*:*:*:* Versions 6.5.26 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:6.5.28:*:*:*:*:*:*:* Versions 6.5.28 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:6.5.29:*:*:*:*:*:*:* Versions 6.5.29 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:6.5.31:*:*:*:*:*:*:* Versions 6.5.31 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:6.5.32:*:*:*:*:*:*:* Versions 6.5.32 Vulnerable ·Cisco
Show 50 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:cisco:ios_xr:6.5.90:*:*:*:*:*:*:* | 6.5.90 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:6.5.92:*:*:*:*:*:*:* | 6.5.92 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:6.5.93:*:*:*:*:*:*:* | 6.5.93 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:6.6.1:*:*:*:*:*:*:* | 6.6.1 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:6.6.2:*:*:*:*:*:*:* | 6.6.2 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:6.6.3:*:*:*:*:*:*:* | 6.6.3 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:6.6.4:*:*:*:*:*:*:* | 6.6.4 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:6.6.11:*:*:*:*:*:*:* | 6.6.11 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:6.6.12:*:*:*:*:*:*:* | 6.6.12 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:6.6.25:*:*:*:*:*:*:* | 6.6.25 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:6.7.1:*:*:*:*:*:*:* | 6.7.1 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:6.7.2:*:*:*:*:*:*:* | 6.7.2 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:6.7.3:*:*:*:*:*:*:* | 6.7.3 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:6.7.4:*:*:*:*:*:*:* | 6.7.4 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:6.7.35:*:*:*:*:*:*:* | 6.7.35 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:6.8.1:*:*:*:*:*:*:* | 6.8.1 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:6.8.2:*:*:*:*:*:*:* | 6.8.2 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:6.9.1:*:*:*:*:*:*:* | 6.9.1 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:7.0.0:*:*:*:*:*:*:* | 7.0.0 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:7.0.1:*:*:*:*:*:*:* | 7.0.1 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:7.0.2:*:*:*:*:*:*:* | 7.0.2 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:7.0.11:*:*:*:*:*:*:* | 7.0.11 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:7.0.12:*:*:*:*:*:*:* | 7.0.12 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:7.0.14:*:*:*:*:*:*:* | 7.0.14 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:7.0.90:*:*:*:*:*:*:* | 7.0.90 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:7.1.1:*:*:*:*:*:*:* | 7.1.1 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:7.1.2:*:*:*:*:*:*:* | 7.1.2 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:7.1.3:*:*:*:*:*:*:* | 7.1.3 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:7.1.15:*:*:*:*:*:*:* | 7.1.15 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:7.1.25:*:*:*:*:*:*:* | 7.1.25 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:7.2.0:*:*:*:*:*:*:* | 7.2.0 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:7.2.1:*:*:*:*:*:*:* | 7.2.1 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:7.2.2:*:*:*:*:*:*:* | 7.2.2 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:7.2.12:*:*:*:*:*:*:* | 7.2.12 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:7.3.1:*:*:*:*:*:*:* | 7.3.1 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:7.3.2:*:*:*:*:*:*:* | 7.3.2 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:7.3.3:*:*:*:*:*:*:* | 7.3.3 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:7.3.4:*:*:*:*:*:*:* | 7.3.4 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:7.3.15:*:*:*:*:*:*:* | 7.3.15 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:7.3.16:*:*:*:*:*:*:* | 7.3.16 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:7.3.27:*:*:*:*:*:*:* | 7.3.27 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:7.4.1:*:*:*:*:*:*:* | 7.4.1 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:7.4.2:*:*:*:*:*:*:* | 7.4.2 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:7.4.15:*:*:*:*:*:*:* | 7.4.15 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:7.4.16:*:*:*:*:*:*:* | 7.4.16 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:7.5.1:*:*:*:*:*:*:* | 7.5.1 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:7.5.2:*:*:*:*:*:*:* | 7.5.2 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:7.5.12:*:*:*:*:*:*:* | 7.5.12 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:7.6.1:*:*:*:*:*:*:* | 7.6.1 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:7.6.15:*:*:*:*:*:*:* | 7.6.15 | Vulnerable | Cisco |
- cpe:2.3:o:cisco:ios_xr:6.5.90:*:*:*:*:*:*:* Versions 6.5.90 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:6.5.92:*:*:*:*:*:*:* Versions 6.5.92 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:6.5.93:*:*:*:*:*:*:* Versions 6.5.93 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:6.6.1:*:*:*:*:*:*:* Versions 6.6.1 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:6.6.2:*:*:*:*:*:*:* Versions 6.6.2 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:6.6.3:*:*:*:*:*:*:* Versions 6.6.3 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:6.6.4:*:*:*:*:*:*:* Versions 6.6.4 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:6.6.11:*:*:*:*:*:*:* Versions 6.6.11 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:6.6.12:*:*:*:*:*:*:* Versions 6.6.12 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:6.6.25:*:*:*:*:*:*:* Versions 6.6.25 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:6.7.1:*:*:*:*:*:*:* Versions 6.7.1 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:6.7.2:*:*:*:*:*:*:* Versions 6.7.2 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:6.7.3:*:*:*:*:*:*:* Versions 6.7.3 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:6.7.4:*:*:*:*:*:*:* Versions 6.7.4 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:6.7.35:*:*:*:*:*:*:* Versions 6.7.35 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:6.8.1:*:*:*:*:*:*:* Versions 6.8.1 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:6.8.2:*:*:*:*:*:*:* Versions 6.8.2 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:6.9.1:*:*:*:*:*:*:* Versions 6.9.1 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:7.0.0:*:*:*:*:*:*:* Versions 7.0.0 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:7.0.1:*:*:*:*:*:*:* Versions 7.0.1 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:7.0.2:*:*:*:*:*:*:* Versions 7.0.2 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:7.0.11:*:*:*:*:*:*:* Versions 7.0.11 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:7.0.12:*:*:*:*:*:*:* Versions 7.0.12 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:7.0.14:*:*:*:*:*:*:* Versions 7.0.14 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:7.0.90:*:*:*:*:*:*:* Versions 7.0.90 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:7.1.1:*:*:*:*:*:*:* Versions 7.1.1 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:7.1.2:*:*:*:*:*:*:* Versions 7.1.2 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:7.1.3:*:*:*:*:*:*:* Versions 7.1.3 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:7.1.15:*:*:*:*:*:*:* Versions 7.1.15 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:7.1.25:*:*:*:*:*:*:* Versions 7.1.25 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:7.2.0:*:*:*:*:*:*:* Versions 7.2.0 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:7.2.1:*:*:*:*:*:*:* Versions 7.2.1 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:7.2.2:*:*:*:*:*:*:* Versions 7.2.2 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:7.2.12:*:*:*:*:*:*:* Versions 7.2.12 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:7.3.1:*:*:*:*:*:*:* Versions 7.3.1 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:7.3.2:*:*:*:*:*:*:* Versions 7.3.2 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:7.3.3:*:*:*:*:*:*:* Versions 7.3.3 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:7.3.4:*:*:*:*:*:*:* Versions 7.3.4 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:7.3.15:*:*:*:*:*:*:* Versions 7.3.15 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:7.3.16:*:*:*:*:*:*:* Versions 7.3.16 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:7.3.27:*:*:*:*:*:*:* Versions 7.3.27 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:7.4.1:*:*:*:*:*:*:* Versions 7.4.1 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:7.4.2:*:*:*:*:*:*:* Versions 7.4.2 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:7.4.15:*:*:*:*:*:*:* Versions 7.4.15 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:7.4.16:*:*:*:*:*:*:* Versions 7.4.16 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:7.5.1:*:*:*:*:*:*:* Versions 7.5.1 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:7.5.2:*:*:*:*:*:*:* Versions 7.5.2 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:7.5.12:*:*:*:*:*:*:* Versions 7.5.12 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:7.6.1:*:*:*:*:*:*:* Versions 7.6.1 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:7.6.15:*:*:*:*:*:*:* Versions 7.6.15 Vulnerable ·Cisco
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2022-20846
- 2026-10-03 Alias added: GHSA-xqfj-6ppw-2qw5
References
Advisory 1
Other 2
- https://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 Publication
- https://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 Publication
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Sources
- CVE-2022-20846 · CVE Program
- CVE-2022-20846 · NVD
- FIRST EPSS
- GHSA-xqfj-6ppw-2qw5 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences