Cyber Resilience

CVE-2021-31252

MediumPublic PoC

Published: 04 June 2021

Published
04 June 2021
Modified
21 November 2024
KEV Added
—
Patch
—
CVSS Score v3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS Score 0.0287 86.6th percentile
Risk Priority 14 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-31252 is a medium-severity Open Redirect (CWE-601) vulnerability in Chiyu-Tech Bf-430 Firmware. Its CVSS base score is 6.1 (Medium).

Operationally, ranked in the top 13.4% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

An open redirect vulnerability exists in BF-630, BF-450M, BF-430, BF-431, BF631-W, BF830-W, Webpass, and SEMAC devices from CHIYU Technology that can be exploited by sending a link that has a specially crafted URL to convince the user to click on…

more

it.

CWE(s)
CWE-601

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

chiyu-tech
bf-430 firmware
all versions
chiyu-tech
bf-431 firmware
all versions
chiyu-tech
bf-450m firmware
all versions
chiyu-tech
semac s2 firmware
all versions
chiyu-tech
semac d1 firmware
all versions
chiyu-tech
semac d2 firmware
all versions
chiyu-tech
semac d4 firmware
all versions
chiyu-tech
semac s3v3 firmware
all versions
chiyu-tech
semac d2 n300 firmware
all versions
chiyu-tech
semac s1 osdp firmware
all versions
+4 more product configuration(s) — see NVD for full list

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

AT-2 Literacy Training and Awareness
addresses: CWE-601

Security awareness includes verifying URLs and avoiding untrusted redirects that lead to malicious sites.

SI-10 Information Input Validation
addresses: CWE-601

Validates redirect targets and URLs to ensure they conform to allowed destinations.

References