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…
- 5.0MediumCVSS base score
- 13.3%Exploitation in 30 daysEPSS · top 3.6% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- 1Public exploitsMetasploit, Nuclei and Exploit-DB
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.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list an Exploit-DB entry for it.
Show the exploits1
Exploit-DB1 entry
- Cisco IOS 12.3 - Show IP BGP Regexp Remote Denial of Service (Exploit-DB entry) (opens in a new tab)
EDB-ID 30506dos, hardwarepublished 17 Aug 2007Verified
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By mitre
Published
- 17 years later
· 17 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
- EPSS (exploitation in 30 days)
- 13.3% · top 3.6% of all CVEs (10 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.0.
Affected products
n/a
- affected n/a
References
9
- 26798 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 25352 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 1018685 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- [cisco-nsp] 20070817 Heads up: "sh ip bgp regexp" crashing router (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- http://www.heise-security.co.uk/news/94526/ (opens in a new tab)x_refsource_MISCx_transferred
- [cisco-nsp] 20070817 About the posting entitled "Heads up: "sh ip bgp regexp" crashing router" (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- 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 (opens in a new tab)x_refsource_MISCx_transferred
- 20070912 Cisco IOS Reload on Regular Expression Processing (opens in a new tab)vendor-advisoryx_refsource_CISCOx_transferred
- ADV-2007-3136 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2007-4413 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2007-4430)Record last updated .