CVE Explorer
CVE-2026-22856
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, a race in the serial channel IRP thread tracking allows a heap use‑after‑free when one thread removes an entry from serial->IrpThreads while another reads it. This vulnerability is fixed in 3.20.1.
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1
Preserved source conflicts
No provider value was silently selected as the winner.
cwe · 2 assertions
{"cweId":"CWE-416","description":"CWE-416: Use After Free","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:795e2f99a9f4e32264376e5e206250d79d1bf5a94f3c0976fee91fd7214ee248 · sha256:aba3d38dab2e9ccf… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-362","description":"CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:795e2f99a9f4e32264376e5e206250d79d1bf5a94f3c0976fee91fd7214ee248 · sha256:aba3d38dab2e9ccf… · /containers/cna/problemTypes/0/descriptions/0
Affected products and versions
1 source assertion{"product":"FreeRDP","vendor":"FreeRDP","versions":[{"status":"affected","version":"< 3.20.1"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:795e2f99a9f4e32264376e5e206250d79d1bf5a94f3c0976fee91fd7214ee248 · sha256:aba3d38dab2e9ccf… · /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_v5cvssurn:baitaphish:normalized-source-record:v2:795e2f99a9f4e32264376e5e206250d79d1bf5a94f3c0976fee91fd7214ee248 · sha256:aba3d38dab2e9ccf… · /containers/cna/metrics/0/cvssV4_0
CWE assertions
2 source assertions{"cweId":"CWE-416","description":"CWE-416: Use After Free","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:795e2f99a9f4e32264376e5e206250d79d1bf5a94f3c0976fee91fd7214ee248 · sha256:aba3d38dab2e9ccf… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-362","description":"CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:795e2f99a9f4e32264376e5e206250d79d1bf5a94f3c0976fee91fd7214ee248 · sha256:aba3d38dab2e9ccf… · /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_v5referenceurn:baitaphish:normalized-source-record:v2:795e2f99a9f4e32264376e5e206250d79d1bf5a94f3c0976fee91fd7214ee248 · sha256:aba3d38dab2e9ccf… · /containers/cna/references/1
{"name":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-w842-c386-fxhv","tags":["x_refsource_CONFIRM"],"url":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-w842-c386-fxhv"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:795e2f99a9f4e32264376e5e206250d79d1bf5a94f3c0976fee91fd7214ee248 · sha256:aba3d38dab2e9ccf… · /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.