CVE-2007-4430

mediumpriority · track · 35EPSS 0.133 · 96 %ileexploit · functionalEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · functional

Likely / severe?

13.3% (96th) EPSS

CVSS 5 · medium

Is it mine?

23 products

Check your exposure

Who says so?

2 sources

enisa_euvd · nvd

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

5.0

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 10 · impact 2.9

v2.04.5mediumAV:N/AC:L/Au:N/C:N/I:N/A:P/E:POCsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USprimary

exploits (1)

Public proof-of-concept and weaponised exploit code.

EDB-30506Cisco IOS 12.3 - Show IP BGP Regexp Remote Denial of Servicefunctional · exploit_db

affected products (23)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
cisco cbosall versionsnvdUScpe:2.3:o:cisco:cbos:*:*:*:*:*:*:*:*
cisco cbos= 12.1nvdUScpe:2.3:o:cisco:cbos:*:*:*:*:*:*:*:*
cisco cbos= 12.2nvdUScpe:2.3:o:cisco:cbos:*:*:*:*:*:*:*:*
cisco cliall versionsnvdUScpe:2.3:a:cisco:cli:*:*:*:*:*:*:*:*
cisco idsall versionsnvdUScpe:2.3:o:cisco:ids:*:*:*:*:*:*:*:*
cisco ios= 10.0nvdUScpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*
cisco ios= 10.3nvdUScpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*
cisco ios= 11.0nvdUScpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*
cisco ios= 11.1nvdUScpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*
cisco ios= 11.2nvdUScpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*
cisco ios= 12.0nvdUScpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*
cisco ios= 12.1nvdUScpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*
cisco ios= 12.2nvdUScpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*
cisco ios= 12.3nvdUScpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*
cisco ios= 12.4nvdUScpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*
cisco ios xrall versionsnvdUScpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*
cisco ios xr= 2.0nvdUScpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*
cisco ios xr= 3.0nvdUScpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*
cisco ios xr= 3.1nvdUScpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*

showing 20 of 23

also known as (2)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

enisa_euvd nvd NVD CVE.org MITRE

published 2007-08-20modified 2026-06-16

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+25171 more

references (18)

External citations — patches, advisories, analysis.

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