CVE-2026-44978
- Source
- https://cve.org/CVERecord?id=CVE-2026-44978
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-44978.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-44978
- Aliases
-
- GHSA-9cg5-f7m7-ppvj
- Downstream
- Published
- 2026-07-20T16:56:03.216Z
- Modified
- 2026-07-23T03:56:23.402458005Z
- Severity
-
- 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
- Summary
- xrdp: Unchecked FIPS padding length in standard RDP Security causes heap out-of-bounds read in HMAC verification
- Details
-
xrdp is an open source RDP server. Versions 0.10.6 and prior contain a heap out-of-bounds read vulnerability within the FIPS-specific receive paths. This vulnerability does not affect the default configuration of xrdp. The vulnerability is only exploitable when the security layer is set to securitylayer=negotiate or securitylayer=rdp, and the crypto level is changed to crypt_level=fips in xrdp.ini. In this specific non-default mode, the server fails to validate the FIPS padding length field, leading to a pointer underflow and a subsequent negative length calculation. An unauthenticated remote attacker can exploit this by sending a crafted FIPS-protected PDU, causing a heap out-of-bounds read that results in a process crash and denial of service (DoS). However, since xrdp forks a new process for each connection by default, an out-of-bounds read causing a process crash is unlikely to bring down the entire xrdp service. This issue has been fixed in version 0.10.6.1.
- Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44978.json", "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-125", "CWE-20" ] }- References