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CVE-2023-34933

21
FAUCET Score

CVE-2023-34933 is a high-severity stack overflow vulnerability affecting H3C Magic B1STV100R012 firmware, allowing unauthenticated attackers to trigger a Denial of Service (DoS) by sending a crafted POST request to the UpdateWanParams function. The vulnerability has a CVSS score of 7.5, indicating a network-based attack with low complexity and high availability impact, but no confidentiality or integrity impact. There is currently no public exploit code available, it is not listed in CISA's KEV catalog, and there is no community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
100r012CPE matchmatch criteria
cpe:2.3:o:h3c:magic_b1st_firmware:100r012:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.85%
Probability of exploitation in next 30 days
EPSS Percentile
54.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0085 is in the 29th percentile among its peer group of 51,553 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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

Remediation records are not available for this CVE.

References

github.com / h4kuy4/vuln/blob/main/H3C_B1STW/CVE-2023-34933.md
ExploitThird Party Advisory