Cisco IOS XR 4.3.4 through 5.3.0 on ASR 9000 devices, when uRPF, PBR, QoS, or an ACL is…
Priority MEDIUM 40CWE-19Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Complete
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA. Impact type from CWE-399 and the CVSS impact.
Summary
Cisco IOS XR 4.3.4 through 5.3.0 on ASR 9000 devices, when uRPF, PBR, QoS, or an ACL is configured, does not properly handle bridge-group virtual interface (BVI) traffic, which allows remote attackers to cause a denial of service (chip and card hangs and reloads) by triggering use of a BVI interface for IPv4 packets, aka Bug ID CSCur62957.
Why it matters now
EPSS 0.03402 88th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 15
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:cisco:ios_xr:4.3.0:*:*:*:*:*:*:* | 4.3.0 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:4.3.1:*:*:*:*:*:*:* | 4.3.1 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:4.3.2:*:*:*:*:*:*:* | 4.3.2 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:4.3.3:*:*:*:*:*:*:* | 4.3.3 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:5.1.0:*:*:*:*:*:*:* | 5.1.0 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:5.1.1:*:*:*:*:*:*:* | 5.1.1 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:5.1.2:*:*:*:*:*:*:* | 5.1.2 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:5.2.0:*:*:*:*:*:*:* | 5.2.0 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:5.2.1:*:*:*:*:*:*:* | 5.2.1 | Vulnerable | Cisco |
| cpe:2.3:h:cisco:asr_9001:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
- cpe:2.3:o:cisco:ios_xr:4.3.0:*:*:*:*:*:*:* Versions 4.3.0 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:4.3.1:*:*:*:*:*:*:* Versions 4.3.1 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:4.3.2:*:*:*:*:*:*:* Versions 4.3.2 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:4.3.3:*:*:*:*:*:*:* Versions 4.3.3 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:5.1.0:*:*:*:*:*:*:* Versions 5.1.0 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:5.1.1:*:*:*:*:*:*:* Versions 5.1.1 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:5.1.2:*:*:*:*:*:*:* Versions 5.1.2 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:5.2.0:*:*:*:*:*:*:* Versions 5.2.0 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:5.2.1:*:*:*:*:*:*:* Versions 5.2.1 Vulnerable ·Cisco
- cpe:2.3:h:cisco:asr_9001:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
Show 5 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:h:cisco:asr_9006:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:h:cisco:asr_9010:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:h:cisco:asr_9904:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:h:cisco:asr_9912:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:h:cisco:asr_9922:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
- cpe:2.3:h:cisco:asr_9006:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:h:cisco:asr_9010:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:h:cisco:asr_9904:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:h:cisco:asr_9912:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:h:cisco:asr_9922:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2015-0695
- 2026-10-03 Alias added: GHSA-cgrr-qv6f-g8ww
References
More Cisco Ios Xr vulnerabilities
- TI-2020-02680 Cisco IOS XR Software Cisco Discovery Protocol Format String Vulnerability KEVCVSS 3.1HIGH 8.8
- TI-2018-00135 Memory corruption in Cisco IOS, IOS XE, and IOS XR KEVCVSS 3.1HIGH 8.8
- TI-2020-03113 Cisco IOS XR Software DVMRP Memory Exhaustion Vulnerabilities KEVCVSS 3.1HIGH 8.6
- TI-2020-03110 Cisco IOS XR Software DVMRP Memory Exhaustion Vulnerability KEVCVSS 3.1HIGH 8.6
- TI-2018-00142 Memory corruption in Cisco IOS, IOS XE, and IOS XR KEVCVSS 3.1HIGH 8.0
- TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
Sources
- CVE-2015-0695 · CVE Program
- CVE-2015-0695 · NVD
- FIRST EPSS
- GHSA-cgrr-qv6f-g8ww · 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