CVE Explorer
CVE-2026-54257
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. From 42.3.1 until 42.3.3, Buffer performs incorrect byte length calculations resulting in heap buffer under/overflow. Most apps will crash and some may perform incorrect buffer allocations in the Node.js Buffer API resulting in unexpected truncation or allocation. This vulnerability is fixed in 42.3.3.
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"electron","vendor":"electron","versions":[{"status":"affected","version":">= 42.3.1, < 42.3.3"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:5ed48119b7fc858d96eba8279068caaef1f1486a88656b8ba3d6e3041901a781 · sha256:2caad93d53fb0da8… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":9.3,"baseSeverity":"CRITICAL","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH"},"metric_type":"cvssV4_0"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:5ed48119b7fc858d96eba8279068caaef1f1486a88656b8ba3d6e3041901a781 · sha256:2caad93d53fb0da8… · /containers/cna/metrics/0/cvssV4_0
CWE assertions
1 source assertion{"cweId":"CWE-120","description":"CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:5ed48119b7fc858d96eba8279068caaef1f1486a88656b8ba3d6e3041901a781 · sha256:2caad93d53fb0da8… · /containers/cna/problemTypes/0/descriptions/0
Source references
1 source assertion{"name":"https://github.com/electron/electron/security/advisories/GHSA-q6m5-f73j-m9mc","tags":["x_refsource_CONFIRM"],"url":"https://github.com/electron/electron/security/advisories/GHSA-q6m5-f73j-m9mc"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:5ed48119b7fc858d96eba8279068caaef1f1486a88656b8ba3d6e3041901a781 · sha256:2caad93d53fb0da8… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.