What is CVE-2021-23853?

CVE-2021-23853 is a high-severity vulnerability in Bosch Cpp13, classified under Improper Input Validation. CVSS score: 8.3/10. Published 2021-06-09.

How severe is CVE-2021-23853?

High severity. CVSS v3 base score is 8.3 out of 10.

Improper input validation in Bosch Cpp13

CVE-2021-23853

In Bosch IP cameras, improper validation of the HTTP header allows an attacker to inject arbitrary HTTP headers through crafted URLs.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2021-06-09 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.009 (58.2th percentile), scored 2026-10-23.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 58.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

psirt.bosch.com/security-advisories/bosch-sa-478243-bt.html (Vendor Advisory)

Frequently asked questions

What is CVE-2021-23853?: CVE-2021-23853 is a high-severity vulnerability in Bosch Cpp13, classified under Improper Input Validation. CVSS score: 8.3/10. Published 2021-06-09.
How severe is CVE-2021-23853?: High severity. CVSS v3 base score is 8.3 out of 10.