Security readout for executives and security teams
Plain-English summary
CVE-2025-3194 affects the JavaScript package bigint-buffer. A buffer overflow in toBigIntLE() can let an attacker crash an application. The business impact is mainly availability: services using this package on attacker-controlled data may be vulnerable to denial of service.
Executive priority
Treat as a high-priority availability risk for internet-facing or API-driven services using bigint-buffer. Prioritize inventory and reachability first, because supplied sources do not name a fixed version or confirm active exploitation.
Technical view
The source bundle describes CWE-120 in bigint-buffer versions from 0.0.0, specifically toBigIntLE(). CVSS v4.0 is 8.7 with network attack vector, low complexity, no privileges, no user interaction, and high vulnerable-system availability impact. No confidentiality or integrity impact is indicated.
Likely exposure
Exposure is most likely in Node.js applications that include bigint-buffer and pass untrusted or remotely supplied buffers into toBigIntLE(). Confirm through dependency manifests, lockfiles, SBOMs, and runtime reachability.
Exploitation context
The CVSS vector indicates remote, unauthenticated, low-complexity exploitation with no user interaction. The CVE is not listed as KEV in the supplied data, and no cited source shows active exploitation. Impact described is application crash.
Researcher notes
Evidence is limited to the CVE/Snyk description, code reference, and related research paper. The supplied bundle does not provide a patch commit, fixed release, or exploitation-in-the-wild evidence. Focus validation on dependency presence and whether attacker-controlled data reaches toBigIntLE().
Mitigation direction
- Identify all applications depending on bigint-buffer.
- Check Snyk, CVE, npm, and maintainer guidance for fixed versions.
- Upgrade, replace, or remove the package when vendor guidance supports it.
- Avoid passing untrusted input to toBigIntLE() where feasible.
- Add input validation and graceful error handling around affected parsing paths.
Validation and detection
- Search package.json, lockfiles, and SBOMs for bigint-buffer.
- Confirm deployed versions across build and runtime environments.
- Determine whether toBigIntLE() is reachable from remote inputs.
- Run software composition analysis using current vulnerability data.
- Verify remediation through dependency rescan and regression testing.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-120: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2025-3194 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.7 (4.0)
- Known Exploited
- No
- Published
Vector: 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 and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
2 official scoresWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
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——snykCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P3.93.6snykVulnerability scoring details
Base CVSS 4.0 score
8.7HighVector: 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
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://security.snyk.io/vuln/SNYK-JS-BIGINTBUFFER-3364597CVE reference, snyk
- https://github.com/no2chem/bigint-buffer/blob/master/src/index.ts%23L25CVE reference, snyk
- https://www.usenix.org/system/files/sec23fall-prepub-262_staicu.pdfCVE reference, snyk
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.