CVE-2021-23853
CVE-2021-23853 is a high-severity vulnerability in Bosch Cpp4 Firmware with a CVSS 3.x base score of 8.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.
Key facts
- Severity: High (CVSS 3.x base score 8.3)
- CVSS v2: 7.5
- EPSS exploit prediction: 1% (54th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-20
- Affected product: Bosch Cpp4 Firmware
- Published:
- Last modified:
Description
In Bosch IP cameras, improper validation of the HTTP header allows an attacker to inject arbitrary HTTP headers through crafted URLs.
Frequently asked questions
- What is CVE-2021-23853?
- In Bosch IP cameras, improper validation of the HTTP header allows an attacker to inject arbitrary HTTP headers through crafted URLs.
- How severe is CVE-2021-23853?
- CVE-2021-23853 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2021-23853 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-23853?
- CVE-2021-23853 primarily affects Bosch Cpp4 Firmware. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2021-23853?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2021-23853 published?
- CVE-2021-23853 was published on 2021-06-09 and last updated on 2026-06-17.
References
Affected products (5)
- cpe:2.3:o:bosch:cpp4_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:bosch:cpp6_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:bosch:cpp7_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:bosch:cpp7.3_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:bosch:cpp13_firmware:-:*:*:*:*:*:*:*
More vulnerabilities in Bosch Cpp4 Firmware
- CVE-2021-23848 — High (CVSS 8.3): An error in the URL handler Bosch IP cameras may lead to a reflected cross site scripting (XSS) in the web-based…
- CVE-2021-23849 — High (CVSS 7.5): A vulnerability in the web-based interface allows an unauthenticated remote attacker to trigger actions on an affected…
- CVE-2022-41677 — Medium (CVSS 5.3): An information disclosure vulnerability was discovered in Bosch IP camera devices allowing an unauthenticated attacker…
- CVE-2021-23852 — Medium (CVSS 4.9): An authenticated attacker with administrator rights Bosch IP cameras can call an URL with an invalid parameter that…
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