CVE Explorer

CVE-2026-22852

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, a malicious RDP server can trigger a heap-buffer-overflow write in the FreeRDP client when processing Audio Input (AUDIN) format lists. audin_process_formats reuses callback->formats_count across multiple MSG_SNDIN_FORMATS PDUs and writes past the newly allocated formats array, causing memory corruption and a crash. This vulnerability is fixed in 3.20.1.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:65f8be07965c22ef13a50e4653c72bf0d4f0620c1927a49205372a526648366d

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"FreeRDP","vendor":"FreeRDP","versions":[{"status":"affected","version":"< 3.20.1"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:d2789f6031b67541ef1e0bb82d840f94695f5236b93c50d2433855812b4876f5 · sha256:5c798424116f727d… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"HIGH","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":6.8,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"PASSIVE","vectorString":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH"},"metric_type":"cvssV4_0"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:d2789f6031b67541ef1e0bb82d840f94695f5236b93c50d2433855812b4876f5 · sha256:5c798424116f727d… · /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_v5cwe
urn:baitaphish:normalized-source-record:v2:d2789f6031b67541ef1e0bb82d840f94695f5236b93c50d2433855812b4876f5 · sha256:5c798424116f727d… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions

{"name":"https://github.com/FreeRDP/FreeRDP/releases/tag/3.20.1","tags":["x_refsource_MISC"],"url":"https://github.com/FreeRDP/FreeRDP/releases/tag/3.20.1"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:d2789f6031b67541ef1e0bb82d840f94695f5236b93c50d2433855812b4876f5 · sha256:5c798424116f727d… · /containers/cna/references/1

{"name":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-9chc-g79v-4qq4","tags":["x_refsource_CONFIRM"],"url":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-9chc-g79v-4qq4"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:d2789f6031b67541ef1e0bb82d840f94695f5236b93c50d2433855812b4876f5 · sha256:5c798424116f727d… · /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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