THREATPORT/VULNERABILITY/CVE-2011-3326
MEDIUM SEVERITY

CVE-2011-3326

Quagga vulnerability

CVSS
5.0
EPSS
4.6%
EPSS pct
91th
Exploited
No known
The ospf_flood function in ospf_flood.c in ospfd in Quagga before 0.99.19 allows remote attackers to cause a denial of service (daemon crash) via an invalid Link State Advertisement (LSA) type in an IPv4 Link State Update message.
Affected vendor
Quagga
Affected product
Quagga
CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness type (CWE)
Published
2011-10-10

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no authentication. Successful exploitation leads to partial impact to availability.

Its EPSS score of 4.6% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 91% of all scored CVEs.

Check your external exposure to CVE-2011-3326

  • Confirm whether Quagga Quagga is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2011-3326.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2011-3326

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2011-3326 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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