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CVE-2021-23852

19
FAUCET Score

CVE-2021-23852 describes a Denial of Service (DoS) vulnerability affecting various Bosch IP camera models (CPP4, CPP6, CPP7, CPP7.3, CPP13 series). An authenticated administrator can trigger a temporary unresponsiveness by calling a specific URL with an invalid parameter. This vulnerability has a CVSS score of 4.9 (Medium), indicating a network-based attack with low complexity, requiring high privileges, and resulting in high availability impact. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:bosch:cpp4_firmware:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:bosch:cpp6_firmware:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:bosch:cpp7_firmware:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:bosch:cpp7.3_firmware:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:bosch:cpp13_firmware:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.9MEDIUM

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.2
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.83%
Probability of exploitation in next 30 days
EPSS Percentile
53.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0083 is in the 56th percentile among its peer group of 3,563 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (6)

capnprotovendor investigatingvia llm_extracted
gcpvendor investigatingvia llm_extracted
hanwhavendor investigatingvia llm_extracted
kongvendor investigatingvia llm_extracted
openwrtvendor investigatingvia llm_extracted
proxmoxvendor investigatingvia llm_extracted

Vendor Advisories (6)

capnprotollm-capnproto-b4b9f7a55e8d3b52CRITICAL

Multiple vulnerabilities in Bosch IP cameras

Jun 9, 2021
openwrtllm-openwrt-8f54a18c50c2098cCRITICAL

Multiple vulnerabilities in Bosch IP cameras

Jun 9, 2021
gcpllm-gcp-a73d48061e78ad6fCRITICAL

Multiple vulnerabilities in Bosch IP cameras

Jun 9, 2021
kongllm-kong-0abaa5722934d984CRITICAL

Multiple vulnerabilities in Bosch IP cameras

Jun 9, 2021
hanwhallm-hanwha-0df8ed674e2ed08dCRITICAL

Multiple vulnerabilities in Bosch IP cameras

Jun 9, 2021
proxmoxllm-proxmox-4758f853e7b28044CRITICAL

Multiple vulnerabilities in Bosch IP cameras

Jun 9, 2021

References

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