What is CVE-2021-0261?

CVE-2021-0261 is a high-severity vulnerability in Juniper Ex2300, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2021-04-22.

How severe is CVE-2021-0261?

High severity. CVSS v3 base score is 7.5 out of 10.

Out-of-bounds Read in Juniper Ex2300

CVE-2021-0261

A vulnerability in the HTTP/HTTPS service used by J-Web, Web Authentication, Dynamic-VPN (DVPN), Firewall Authentication Pass-Through with Web-Redirect, and Captive Portal allows an unauthenticated attacker to cause an extended Denial of S…

Vulnerability class: Buffer Overflow

EPSS: 0.011 (61.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Juniper Ex2300
Juniper Ex2300-c
Juniper Ex3400
Juniper Ex4300
Juniper Ex4400
Juniper Ex4600
Juniper Ex4650
Juniper Ex9200
Juniper Ex9250
Juniper Junos — versions 12.3, 12.3x48, 15.1x49

Weakness classification (CWE)

References

sirt@juniper.net (x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2021-0261?: CVE-2021-0261 is a high-severity vulnerability in Juniper Ex2300, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2021-04-22.
How severe is CVE-2021-0261?: High severity. CVSS v3 base score is 7.5 out of 10.