How severe is CVE-2007-4430?

CVE-2007-4430 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2007-4430 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 13% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2007-4430?

CVE-2007-4430 primarily affects Cisco Cli. In total, 22 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2007-4430?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2007-4430 published?

CVE-2007-4430 was published on 2007-08-20 and last updated on 2026-06-16.

CVE-2007-4430

CVE-2007-4430 is a medium-severity vulnerability in Cisco Cli with a CVSS 2.0 base score of 5.0. Its EPSS exploit-prediction score of 13% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-20.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 13% (96th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Cisco Cli
Published: 2007-08-20
Last modified: 2026-06-16

Description

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.

Frequently asked questions

What is CVE-2007-4430?: 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.
How severe is CVE-2007-4430?: CVE-2007-4430 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2007-4430 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 13% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-4430?: CVE-2007-4430 primarily affects Cisco Cli. In total, 22 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2007-4430?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2007-4430 published?: CVE-2007-4430 was published on 2007-08-20 and last updated on 2026-06-16.

References

Affected products (22)

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

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