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Fencer Vulns
low 3.5

CVE-2007-4826 json

bgpd in Quagga before 0.99.9 allows explicitly configured BGP peers to cause a denial of service (crash) via a malformed (1) OPEN message o…

published 2007-09-12 19 y ago modified 2026-06-16 4 mo ago also EUVD-2007-4807

cvss
3.5
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.7%
EPSS 1.7% chance of exploitation in 30 days, percentile 77%
public exploits
0
none known

Summary

bgpd in Quagga before 0.99.9 allows explicitly configured BGP peers to cause a denial of service (crash) via a malformed (1) OPEN message or (2) a COMMUNITY attribute, which triggers a NULL pointer dereference. NOTE: vector 2 only exists when debugging is enabled.

Patch / fix

  • quagga RHEL 4 0.98.3-4.el4_8.1
  • quagga RHEL 5 0.98.6-5.el5_5.2
  • quagga-contrib RHEL 4 0.98.3-4.el4_8.1
  • quagga-contrib RHEL 5 0.98.6-5.el5_5.2

red hat advisories RHSA-2010:0785

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2007-4826 updated cvss 3.3

quagga bgpd DoS

  • Red Hat Enterprise Linux (v. 5 server) quagga 0.98.6-5.el5_5.2, quagga-contrib 0.98.6-5.el5_5.2 Red Hat Enterprise Linux AS version 4 quagga 0.98.3-4.el4_8.1, quagga-contrib 0.98.3-4.el4_8.1 Red Hat Enterprise Linux Desktop (v. 5 client) quagga 0.98.6-5.el5_5.2, quagga-contrib 0.98.6-5.el5_5.2 Red Hat Enterprise Linux Desktop version 4 quagga 0.98.3-4.el4_8.1, quagga-contrib 0.98.3-4.el4_8.1 Red Hat Enterprise Linux Desktop Workstation (v. 5 client) quagga 0.98.6-5.el5_5.2, quagga-contrib 0.98.6-5.el5_5.2 Red Hat Enterprise Linux ES version 4 quagga 0.98.3-4.el4_8.1, quagga-contrib 0.98.3-4.el4_8.1
    +1 more products
    Red Hat Enterprise Linux WS version 4 quagga 0.98.3-4.el4_8.1, quagga-contrib 0.98.3-4.el4_8.1
    fixed: vendor fix RHSA-2010:0785

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.69% chance of exploitation in the next 30 days, higher than 77% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 3.5 AV:N/AC:M/Au:S/C:N/I:N/A:P

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.