SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2016-7072

An issue has been found in PowerDNS Authoritative Server before 3.4.11 and 4.0.2 allowing a remote, unauthenticated attacker to cause a denial of service by opening a large number of TCP connections to the web server.

HIGH 7.5EPSS 6.15%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (6.15%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

An issue has been found in PowerDNS Authoritative Server before 3.4.11 and 4.0.2 allowing a remote, unauthenticated attacker to cause a denial of service by opening a large number of TCP connections to the web server. If the web server runs out of file descriptors, it triggers an exception and terminates the whole PowerDNS process. While it's more complicated for an unauthorized attacker to make the web server run out of file descriptors since its connection will be closed just after being accepted, it might still be possible.

CVSS 3.0
7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
6.15% probability · 93th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-20, CWE-400
Affected
powerdns/authoritative · debian/debian linux
Source
secalert@redhat.com
EPSS trend
0%5%10%27 October 2026: 6.15%27 October 202627 October 2026

EPSS 6.2% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.