CVE-2007-4430

Exp

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.

Published: 2007-08-20 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2007-4430 is rated High Exploit Risk (63.6/100): CVSS Medium severity, with high exploitation likelihood (EPSS 13.28%, 96th percentile). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2007-4430

EDB-ID Source Kind Published Link
30506 exploit_db edb 2007-08-17 Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2007-4430

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 26.97% 13.28% -13.69%
2 2026-04-08 26.23% 26.97% +0.73%
3 2025-12-28 — 26.23% —

Full EPSS history (20 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2007-4430

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2007-4430

Affected software / configurations for CVE-2007-4430

Vendor Product Version Raw CPE
cisco cli — cpe:2.3:a:cisco:cli:*:*:*:*:*:*:*:*
cisco cbos — cpe:2.3:o:cisco:cbos:*:*:*:*:*:*:*:*
cisco cbos 12.1 cpe:2.3:o:cisco:cbos:12.1:*:*:*:*:*:*:*
cisco cbos 12.2 cpe:2.3:o:cisco:cbos:12.2:*:*:*:*:*:*:*
cisco ids — cpe:2.3:o:cisco:ids:*:*:*:*:*:*:*:*
cisco ios 10.0 cpe:2.3:o:cisco:ios:10.0:*:*:*:*:*:*:*
cisco ios 10.3 cpe:2.3:o:cisco:ios:10.3:*:*:*:*:*:*:*
cisco ios 11.0 cpe:2.3:o:cisco:ios:11.0:*:*:*:*:*:*:*
cisco ios 11.1 cpe:2.3:o:cisco:ios:11.1:*:*:*:*:*:*:*
cisco ios 11.2 cpe:2.3:o:cisco:ios:11.2:*:*:*:*:*:*:*
cisco ios 12.0 cpe:2.3:o:cisco:ios:12.0:*:*:*:*:*:*:*
cisco ios 12.1 cpe:2.3:o:cisco:ios:12.1:*:*:*:*:*:*:*
cisco ios 12.2 cpe:2.3:o:cisco:ios:12.2:*:*:*:*:*:*:*
cisco ios 12.3 cpe:2.3:o:cisco:ios:12.3:*:*:*:*:*:*:*
cisco ios 12.4 cpe:2.3:o:cisco:ios:12.4:*:*:*:*:*:*:*
cisco ios_xr — cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*
cisco ios_xr 2.0 cpe:2.3:o:cisco:ios_xr:2.0:*:*:*:*:*:*:*
cisco ios_xr 3.0 cpe:2.3:o:cisco:ios_xr:3.0:*:*:*:*:*:*:*
cisco ios_xr 3.1 cpe:2.3:o:cisco:ios_xr:3.1:*:*:*:*:*:*:*
cisco ios_xr 3.2 cpe:2.3:o:cisco:ios_xr:3.2:*:*:*:*:*:*:*
cisco ios_xr 3.3 cpe:2.3:o:cisco:ios_xr:3.3:*:*:*:*:*:*:*
cisco ios_xr 3.4 cpe:2.3:o:cisco:ios_xr:3.4:*:*:*:*:*:*:*

References for CVE-2007-4430

cvelogic Threat Intelligence