On NGINX Controller versions 3.1.0-3.3.0, AVRD uses world-readable and world-writable permissions on its socket, which allows processes or…

published 2020-05-07 6y ago modified 2026-06-17 4mo ago also EUVD-2020-27049

cvss: 7.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 23%
public exploits: 0; none known

On NGINX Controller versions 3.1.0-3.3.0, AVRD uses world-readable and world-writable permissions on its socket, which allows processes or users on the local system to write arbitrary data into the socket. A local system attacker can make AVRD segmentation fault (SIGSEGV) by writing malformed messages to the socket.

Patch / fix

fixed in 1

f5 nginx_controller 3.4.0

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Exploit prediction

0.30% chance of exploitation in the next 30 days, higher than 23% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	4.6	AV:L/AC:L/Au:N/C:P/I:P/A:P

Affected products

n/a NGINX Controller

Classification

Weakness

CWE-732 Incorrect Permission Assignment for Critical Resource

References

support.f5.com /csp/article/K95120415
vendor-advisory
security.netapp.com /advisory/ntap-20200522-0001/

Sources

CVE List CVE-2020-5895
NVD CVE-2020-5895

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