CVE Explorer

CVE-2026-23567

An integer underflow in the UDP command handler of the TeamViewer DEX Client (former 1E Client) - Content Distribution Service (NomadBranch.exe) prior version 26.1 for Windows allows an adjacent network attacker to trigger a heap-based buffer overflow and cause a denial-of-service (service crash) via specially crafted UDP packets.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:7fbe0675e025df6c3b00aafd08b60187889b76fc0e8977afef999b97802bc043

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"defaultStatus":"unaffected","modules":["Content Distribution Service","NomadBranch.exe"],"platforms":["Windows"],"product":"DEX","vendor":"TeamViewer","versions":[{"lessThan":"26.1","status":"affected","version":"0","versionType":"custom"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:d4e5a7a33da2fa56687995fb8bd024604a9997950493461a0098f82bfeeb7223 · sha256:6abc3098907a777c… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackVector":"ADJACENT_NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:d4e5a7a33da2fa56687995fb8bd024604a9997950493461a0098f82bfeeb7223 · sha256:6abc3098907a777c… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion

{"cweId":"CWE-122","description":"CWE-122 Heap-based Buffer Overflow","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:d4e5a7a33da2fa56687995fb8bd024604a9997950493461a0098f82bfeeb7223 · sha256:6abc3098907a777c… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion

{"url":"https://www.teamviewer.com/en/resources/trust-center/security-bulletins/tv-2026-1001/"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:d4e5a7a33da2fa56687995fb8bd024604a9997950493461a0098f82bfeeb7223 · sha256:6abc3098907a777c… · /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.

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