What is CVE-2021-23909?

CVE-2021-23909 is a medium-severity vulnerability in Mercedes-benz A_220, classified under Out-of-bounds Write. CVSS score: 6.3/10. Published 2021-05-13.

How severe is CVE-2021-23909?

Medium severity. CVSS v3 base score is 6.3 out of 10.

Buffer overflow in Mercedes-benz A_220

CVE-2021-23909

An issue was discovered in HERMES 2.1 in the MBUX Infotainment System on Mercedes-Benz vehicles through 2021. The SH2 MCU allows remote code execution.

Vulnerability class: Buffer Overflow

EPSS: 0.024 (81.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:H.

Affected products

Mercedes-benz A_220
Mercedes-benz A_220_4matic
Mercedes-benz E_350
Mercedes-benz E_350_4matic
Mercedes-benz Eqc
Mercedes-benz Gle_350
Mercedes-benz Gle_350_4matic
Mercedes-benz Hermes — versions 2.1
N/a — versions n/a

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

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

Frequently asked questions

What is CVE-2021-23909?: CVE-2021-23909 is a medium-severity vulnerability in Mercedes-benz A_220, classified under Out-of-bounds Write. CVSS score: 6.3/10. Published 2021-05-13.
How severe is CVE-2021-23909?: Medium severity. CVSS v3 base score is 6.3 out of 10.