CVE Explorer

CVE-2026-67305

FreeRDP Windows client before 3.29.0 contains a heap buffer overflow vulnerability in the clipboard virtual channel when processing CLIPRDR_FILE_CONTENTS_RESPONSE PDUs without validating the server-provided size against the destination buffer. A malicious RDP server can send a response with a data payload significantly larger than requested, causing arbitrary heap memory corruption that may enable remote code execution when a user performs a paste operation.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:d0092e0d691b9a3de75316ddd252518397c65c203284f3e645925bd3ba60259a

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"defaultStatus":"unaffected","product":"FreeRDP","vendor":"FreeRDP","versions":[{"lessThan":"3.29.0","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"3.29.0","versionType":"semver"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:4389bb6e62d2b56a821b0f15a1084cf2b1ef64c9fbfb036e3b14b71797bd9174 · sha256:d1225450a1e2ad88… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":9.4,"baseSeverity":"CRITICAL","privilegesRequired":"NONE","subAvailabilityImpact":"HIGH","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","userInteraction":"PASSIVE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH"},"metric_type":"cvssV4_0"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:4389bb6e62d2b56a821b0f15a1084cf2b1ef64c9fbfb036e3b14b71797bd9174 · sha256:d1225450a1e2ad88… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion

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

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:4389bb6e62d2b56a821b0f15a1084cf2b1ef64c9fbfb036e3b14b71797bd9174 · sha256:d1225450a1e2ad88… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions

{"name":"GitHub Security Advisory (GHSA-cj9v-h4hq-29jr)","tags":["vendor-advisory"],"url":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-cj9v-h4hq-29jr"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:4389bb6e62d2b56a821b0f15a1084cf2b1ef64c9fbfb036e3b14b71797bd9174 · sha256:d1225450a1e2ad88… · /containers/cna/references/0

{"name":"VulnCheck Advisory: FreeRDP Windows Client before 3.29.0 Heap Buffer Overflow via Cliprdr","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/freerdp-windows-client-before-heap-buffer-overflow-via-cliprdr"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:4389bb6e62d2b56a821b0f15a1084cf2b1ef64c9fbfb036e3b14b71797bd9174 · sha256:d1225450a1e2ad88… · /containers/cna/references/1

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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