CVE-2009-2958

Dnsmasq vulnerability

CVSS

4.3

EPSS

10.4%

EPSS pct

95th

Exploited

No known

The tftp_request function in tftp.c in dnsmasq before 2.50, when --enable-tftp is used, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a TFTP read (aka RRQ) request with a malformed blksize option.

Affected vendor

Thekelleys

Affected product

Dnsmasq

CVSS vector

AV:N/AC:M/Au:N/C:N/I:N/A:P

Weakness type (CWE)

CWE-399

Published

2009-09-02

Risk analysis

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

Its EPSS score of 10.4% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 95% of all scored CVEs.

Check your external exposure to CVE-2009-2958

Confirm whether Thekelleys Dnsmasq is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2009-2958.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2009-2958

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