CVE Explorer
CVE-2026-22211
TinyOS versions up to and including 2.1.2 contain a global buffer overflow vulnerability in the printfUART formatted output implementation used within the ZigBee / IEEE 802.15.4 networking stack. The implementation formats output into a fixed-size global buffer and concatenates strings for %s format specifiers using strcat() without verifying remaining buffer capacity. When printfUART is invoked with a caller-controlled string longer than the available space, the unbounded sprintf/strcat sequenc
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"defaultStatus":"unknown","packageURL":"pkg:github/tinyos/tinyos-main","product":"TinyOS","repo":"https://github.com/tinyos/tinyos-main","vendor":"TinyOS","versions":[{"lessThanOrEqual":"2.1.2","status":"affected","version":"0","versionType":"semver"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:ad20da1f11f1cac0b55203a67b72e0c91df285d58d47619f682c0282a55959c9 · sha256:3091646b42a1057b… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"LOCAL","baseScore":5.1,"baseSeverity":"MEDIUM","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"N…
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:ad20da1f11f1cac0b55203a67b72e0c91df285d58d47619f682c0282a55959c9 · sha256:3091646b42a1057b… · /containers/cna/metrics/0/cvssV4_0
CWE assertions
1 source assertion{"cweId":"CWE-787","description":"CWE-787 Out-of-bounds Write","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:ad20da1f11f1cac0b55203a67b72e0c91df285d58d47619f682c0282a55959c9 · sha256:3091646b42a1057b… · /containers/cna/problemTypes/0/descriptions/0
Source references
3 source assertions{"tags":["product"],"url":"https://github.com/tinyos/tinyos-main"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:ad20da1f11f1cac0b55203a67b72e0c91df285d58d47619f682c0282a55959c9 · sha256:3091646b42a1057b… · /containers/cna/references/1
{"tags":["technical-description","exploit"],"url":"https://seclists.org/fulldisclosure/2026/Jan/14"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:ad20da1f11f1cac0b55203a67b72e0c91df285d58d47619f682c0282a55959c9 · sha256:3091646b42a1057b… · /containers/cna/references/0
{"tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/tinyos-global-buffer-overflow-in-printfuart"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:ad20da1f11f1cac0b55203a67b72e0c91df285d58d47619f682c0282a55959c9 · sha256:3091646b42a1057b… · /containers/cna/references/2
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.