CVE-2025-3194 json
bigint-buffer Vulnerable to Buffer Overflow via toBigIntLE() Function
published last yr. modified 3mo ago also GHSA-3gc7-fjrx-p6mg , EUVD-2025-9701
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 54%
- public exploits
- 0
- none known
Summary
Versions of the package bigint-buffer from 0.0.0 are vulnerable to Buffer Overflow in the toBigIntLE() function. Attackers can exploit this to crash the application.
Is CVE-2025-3194 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- yes
- Technical impact
- partial
- Assessed
- last yr.
Exploit prediction
0.74% chance of exploitation in the next 30 days, higher than 54% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- security.snyk.io https://security.snyk.io/vuln/SNYK-JS-BIGINTBUFFER-3364597 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 8.7 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P |
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P |
| CNA | 4.0 | 7.7 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/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 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| GitHub | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | bigint-buffer | <=1.1.5 |
no fix listed |
Affected products
- n/a bigint-buffer
Classification
- Weakness
-
- CWE-120 Buffer Copy without Checking Size of Input
References
-
security.snyk.io
/vuln/SNYK-JS-BIGINTBUFFER-3364597
exploit, web
- github.com /no2chem/bigint-buffer/blob/master/src/index.ts%23L25
-
usenix.org
/system/files/sec23fall-prepub-262_staicu.pdf
web
-
nvd.nist.gov
/vuln/detail/CVE-2025-3194
advisory
-
github.com
/no2chem/bigint-buffer
package
-
github.com
/no2chem/bigint-buffer/blob/master/src/index.ts#L25
web
Sources
- CVE List CVE-2025-3194
- GitHub Advisory GHSA-3gc7-fjrx-p6mg
- NVD CVE-2025-3194
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