What is CVE-2021-35977?

CVE-2021-35977 is a critical-severity vulnerability in Digi 6350-sr, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2021-10-08.

How severe is CVE-2021-35977?

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

Buffer overflow in Digi 6350-sr

CVE-2021-35977

An issue was discovered in Digi RealPort for Windows through 4.8.488.0. A buffer overflow exists in the handling of ADDP discovery response messages. This could result in arbitrary code execution.

Vulnerability class: Buffer Overflow

EPSS: 0.015 (71.9th 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

Digi 6350-sr
Digi 6350-sr_firmware
Digi Cm
Digi Cm_firmware
Digi Connect_es
Digi Connect_es_firmware
Digi Connectport_lts_8\/16\/32
Digi Connectport_lts_8\/16\/32_firmware
Digi Connectport_ts_8\/16
Digi Connectport_ts_8\/16_firmware

Weakness classification (CWE)

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

References

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

Frequently asked questions

What is CVE-2021-35977?: CVE-2021-35977 is a critical-severity vulnerability in Digi 6350-sr, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2021-10-08.
How severe is CVE-2021-35977?: Critical severity. CVSS v3 base score is 9.8 out of 10.