What is CVE-2020-10823?

CVE-2020-10823 is a critical-severity vulnerability in Draytek Vigor2960, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2020-03-26.

How severe is CVE-2020-10823?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Draytek Vigor2960

CVE-2020-10823

A stack-based buffer overflow in /cgi-bin/activate.cgi through var parameter on Draytek Vigor3900, Vigor2960, and Vigor300B devices before 1.5.1 allows remote attackers to achieve code execution via a remote HTTP request (issue 1 of 3).

Vulnerability class: Buffer Overflow

EPSS: 0.043 (89.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Draytek Vigor2960
Draytek Vigor2960_firmware
Draytek Vigor300b
Draytek Vigor300b_firmware
Draytek Vigor3900
Draytek Vigor3900_firmware
N/a — versions n/a

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)
cve@mitre.org (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2020-10823?: CVE-2020-10823 is a critical-severity vulnerability in Draytek Vigor2960, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2020-03-26.
How severe is CVE-2020-10823?: Critical severity. CVSS v3 base score is 9.8 out of 10.