uYanki board-stm32f103rc-berial heartrate1_hal.c heartrate1_i2c_hal_write stack-based overflow

published 2025-06-15 16 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-18353

cvss: 5.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 21%
public exploits: 0; none known

A vulnerability classified as critical was found in uYanki board-stm32f103rc-berial up to 84daed541609cb7b46854cc6672a275d1007e295. This vulnerability affects the function heartrate1_i2c_hal_write of the file 7.Example/hal/i2c/max30100/Manual/demo2/2/heartrate1_hal.c. The manipulation of the argument num leads to stack-based buffer overflow. Continious delivery with rolling releases is used by this product. Therefore, no version details of affected nor updated releases are available.

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 16 mo ago (2025-06-16)

Exploit prediction

0.29% chance of exploitation in the next 30 days, higher than 21% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	4.0	5.1	CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X
CNA	3.1	5.5	CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:R
CNA	3.0	5.5	CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:R
CNA	2.0	5.2	AV:A/AC:L/Au:S/C:P/I:P/A:P/E:ND/RL:ND/RC:UR
CNA	4.0	5.1	CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CNA	3.1	5.5	CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
CNA	2.0	5.2	AV:A/AC:L/Au:S/C:P/I:P/A:P

Affected products

uYanki board-stm32f103rc-berial

Classification

Weakness

CWE-121 Stack-based Buffer Overflow
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

vuldb.com /?id.312562
vdb-entry, technical-description
vuldb.com /?ctiid.312562
signature, permissions-required
vuldb.com /?submit.588106
third-party-advisory
github.com /uYanki/board-stm32f103rc-berial/issues/3
issue-tracking

Sources

CVE List CVE-2025-6093
NVD CVE-2025-6093

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary