Unspecified vulnerability in Cisco IOS 12.0 through 12.4 allows context-dependent…
Priority LOW 37CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
Unspecified vulnerability in Cisco IOS 12.0 through 12.4 allows context-dependent attackers to cause a denial of service (device restart and BGP routing table rebuild) via certain regular expressions in a "show ip bgp regexp" command. NOTE: unauthenticated remote attacks are possible in environments with anonymous telnet and Looking Glass access.
Why it matters now
EPSS 0.13281 96th 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 · 22
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:cisco:cli:*:*:*:*:*:*:*:* | all versions | Vulnerable | Cisco |
| cpe:2.3:o:cisco:cbos:*:*:*:*:*:*:*:* | all versions | Vulnerable | Cisco |
| cpe:2.3:o:cisco:cbos:12.1:*:*:*:*:*:*:* | 12.1 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:cbos:12.2:*:*:*:*:*:*:* | 12.2 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ids:*:*:*:*:*:*:*:* | all versions | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios:10.0:*:*:*:*:*:*:* | 10.0 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios:10.3:*:*:*:*:*:*:* | 10.3 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios:11.0:*:*:*:*:*:*:* | 11.0 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios:11.1:*:*:*:*:*:*:* | 11.1 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios:11.2:*:*:*:*:*:*:* | 11.2 | Vulnerable | Cisco |
- cpe:2.3:a:cisco:cli:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Cisco
- cpe:2.3:o:cisco:cbos:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Cisco
- cpe:2.3:o:cisco:cbos:12.1:*:*:*:*:*:*:* Versions 12.1 Vulnerable ·Cisco
- cpe:2.3:o:cisco:cbos:12.2:*:*:*:*:*:*:* Versions 12.2 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ids:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios:10.3:*:*:*:*:*:*:* Versions 10.3 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios:11.0:*:*:*:*:*:*:* Versions 11.0 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios:11.1:*:*:*:*:*:*:* Versions 11.1 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios:11.2:*:*:*:*:*:*:* Versions 11.2 Vulnerable ·Cisco
Show 12 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:cisco:ios:12.0:*:*:*:*:*:*:* | 12.0 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios:12.1:*:*:*:*:*:*:* | 12.1 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios:12.2:*:*:*:*:*:*:* | 12.2 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios:12.3:*:*:*:*:*:*:* | 12.3 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios:12.4:*:*:*:*:*:*:* | 12.4 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:* | all versions | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:2.0:*:*:*:*:*:*:* | 2.0 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:3.0:*:*:*:*:*:*:* | 3.0 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:3.1:*:*:*:*:*:*:* | 3.1 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:3.2:*:*:*:*:*:*:* | 3.2 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:3.3:*:*:*:*:*:*:* | 3.3 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:3.4:*:*:*:*:*:*:* | 3.4 | Vulnerable | Cisco |
- cpe:2.3:o:cisco:ios:12.0:*:*:*:*:*:*:* Versions 12.0 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios:12.1:*:*:*:*:*:*:* Versions 12.1 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios:12.2:*:*:*:*:*:*:* Versions 12.2 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios:12.3:*:*:*:*:*:*:* Versions 12.3 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios:12.4:*:*:*:*:*:*:* Versions 12.4 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:2.0:*:*:*:*:*:*:* Versions 2.0 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:3.0:*:*:*:*:*:*:* Versions 3.0 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:3.1:*:*:*:*:*:*:* Versions 3.1 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:3.2:*:*:*:*:*:*:* Versions 3.2 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:3.3:*:*:*:*:*:*:* Versions 3.3 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:3.4:*:*:*:*:*:*:* Versions 3.4 Vulnerable ·Cisco
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2007-4430
- 2026-10-03 Alias added: GHSA-xw39-hmhj-f95j
References
Other 4
- [cisco-nsp] 20070817 Heads up: "sh ip bgp regexp" crashing router
- http://www.heise-security.co.uk/news/94526/
- [cisco-nsp] 20070817 About the posting entitled "Heads up: "sh ip bgp regexp" crashing router"
- http://forum.cisco.com/eforum/servlet/NetProf?page=netprof&forum=Network%20Infrastructure&topic=WAN%2C%20Routing%20and%20Switching&CommCmd=MB%3Fcmd%3Ddisplay_location%26location%3D.1ddf7bc9
More Cisco Cbos vulnerabilities
- TI-2001-00722 Cisco switches and routers running CBOS 2.3.8 and earlier use predictable TCP Initial… CVSS 2.0HIGH 7.5
- TI-2001-00724 Cisco CBOS 2.3.8 and earlier stores the passwords for (1) exec and (2) enable in… CVSS 2.0HIGH 7.5
- TI-2002-00860 Cisco DSL CPE devices running CBOS 2.4.4 and earlier allows remote attackers to cause a… CVSS 2.0MEDIUM 5.0
- TI-2001-01019 Cisco 600 series routers running CBOS 2.0.1 through 2.4.2ap allows remote attackers to… CVSS 2.0MEDIUM 5.0
- TI-2001-00723 Cisco CBOS 2.3.8 and earlier allows remote attackers to cause a denial of service via an… CVSS 2.0MEDIUM 5.0
- TI-2001-01020 Web-based configuration utility in Cisco 600 series routers running CBOS 2.0.1 through… CVSS 2.0MEDIUM 5.0
Sources
- CVE-2007-4430 · CVE Program
- CVE-2007-4430 · NVD
- FIRST EPSS
- GHSA-xw39-hmhj-f95j · 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