What is CVE-2021-0271?

CVE-2021-0271 is a medium-severity vulnerability in Juniper Ex2200-c, classified under Double Free. CVSS score: 6.5/10. Published 2021-04-22.

How severe is CVE-2021-0271?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Double Free in Juniper Ex2200-c

CVE-2021-0271

A Double Free vulnerability in the software forwarding interface daemon (sfid) process of Juniper Networks Junos OS allows an adjacently-connected attacker to cause a Denial of Service (DoS) by sending a crafted ARP packet to the device. C…

Vulnerability class: Double Free

EPSS: 0.004 (32.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Juniper Ex2200-c
Juniper Ex3200
Juniper Ex3300
Juniper Ex4200
Juniper Ex4500
Juniper Ex4550
Juniper Ex6210
Juniper Ex8208
Juniper Ex8216
Juniper Junos — versions 12.3, 15.1

Weakness classification (CWE)

CWE-415 — Double Free

References

sirt@juniper.net (x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2021-0271?: CVE-2021-0271 is a medium-severity vulnerability in Juniper Ex2200-c, classified under Double Free. CVSS score: 6.5/10. Published 2021-04-22.
How severe is CVE-2021-0271?: Medium severity. CVSS v3 base score is 6.5 out of 10.