CVE-2009-1572

CVE-2009-1572 is a medium-severity vulnerability in Quagga with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

The BGP daemon (bgpd) in Quagga 0.99.11 and earlier allows remote attackers to cause a denial of service (crash) via an AS path containing ASN elements whose string representation is longer than expected, which triggers an assert error.

Frequently asked questions

What is CVE-2009-1572?
The BGP daemon (bgpd) in Quagga 0.99.11 and earlier allows remote attackers to cause a denial of service (crash) via an AS path containing ASN elements whose string representation is longer than expected, which triggers an assert error.
How severe is CVE-2009-1572?
CVE-2009-1572 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2009-1572 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-1572?
CVE-2009-1572 primarily affects Quagga. In total, 31 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-1572?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-1572 published?
CVE-2009-1572 was published on 2009-05-06 and last updated on 2026-06-16.

References

Affected products (31)

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