What is CVE-2022-32548?

CVE-2022-32548 is a critical-severity vulnerability in Draytek Vigor1000b, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 10.0/10. Published 2022-08-29.

How severe is CVE-2022-32548?

Critical severity. CVSS v3 base score is 10.0 out of 10.

Is CVE-2022-32548 known to be exploited?

15 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Draytek Vigor1000b

CVE-2022-32548

An issue was discovered on certain DrayTek Vigor routers before July 2022 such as the Vigor3910 before 4.3.1.1. /cgi-bin/wlogin.cgi has a buffer overflow via the username or password to the aa or ab field.

Vulnerability class: Buffer Overflow

EPSS: 0.338 (98.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

Public proof-of-concept exploits

References

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

Frequently asked questions

What is CVE-2022-32548?: CVE-2022-32548 is a critical-severity vulnerability in Draytek Vigor1000b, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 10.0/10. Published 2022-08-29.
How severe is CVE-2022-32548?: Critical severity. CVSS v3 base score is 10.0 out of 10.
Is CVE-2022-32548 known to be exploited?: 15 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.