CVE-2026-23948

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Source
https://cve.org/CVERecord?id=CVE-2026-23948
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-23948.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-23948
Aliases
  • GHSA-6f3c-qvqq-2px5
Downstream
Related
Published
2026-02-09T18:12:00.737Z
Modified
2026-04-19T10:47:08.513219Z
Severity
  • 6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N CVSS Calculator
Summary
FreeRDP has a NULL Pointer Dereference in rdp_write_logon_info_v2()
Details

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.22.0, a NULL pointer dereference vulnerability in rdpwritelogoninfov2() allows a malicious RDP server to crash FreeRDP proxy by sending a specially crafted LogonInfoV2 PDU with cbDomain=0 or cbUserName=0. This vulnerability is fixed in 3.22.0.

Database specific 
{
    "cwe_ids": [
        "CWE-476"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23948.json",
    "cna_assigner": "GitHub_M"
}
References

Affected packages

Git / github.com/freerdp/freerdp

Affected ranges

Type
GIT
Repo
https://github.com/freerdp/freerdp
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
e3ef4c71138f76516299cb3637d2d0c59b2a3737
Fixed
4d44e3c097656a8b9ec696353647b0888ca45860
Database specific 
{
    "versions": [
        {
            "introduced": "0"
        },
        {
            "fixed": "3.22.0"
        }
    ]
}

Affected versions

1.*
1.0-beta1
1.0-beta2
1.0-beta4
1.0-beta5
1.0.0
1.0.1
1.1.0-beta+2013071101
1.1.0-beta1
1.1.0-beta1+android2
1.1.0-beta1+android3
1.1.0-beta1+android4
1.1.0-beta1+android5
1.1.0-beta1+ios1
1.1.0-beta1+ios2
1.1.0-beta1+ios3
1.1.0-beta1+ios4
1.2.0-beta1+android7
1.2.0-beta1+android9
2.*
2.0.0
2.0.0-beta1+android10
2.0.0-beta1+android11
2.0.0-rc0
2.0.0-rc1
2.0.0-rc2
2.0.0-rc3
2.0.0-rc4
3.*
3.0.0
3.0.0-beta1
3.0.0-beta2
3.0.0-beta3
3.0.0-beta4
3.0.0-rc0
3.1.0
3.2.0
3.3.0
3.4.0
3.5.0
3.5.1

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-23948.json"
vanir_signatures_modified 
"2026-04-19T10:47:08Z"
vanir_signatures 
[
    {
        "signature_version": "v1",
        "signature_type": "Function",
        "id": "CVE-2026-23948-491c49ff",
        "digest": {
            "function_hash": "296723680882049798059941187871937152013",
            "length": 824.0
        },
        "source": "https://github.com/freerdp/freerdp/commit/4d44e3c097656a8b9ec696353647b0888ca45860",
        "target": {
            "function": "rdp_send_save_session_info",
            "file": "libfreerdp/core/info.c"
        },
        "deprecated": false
    },
    {
        "signature_version": "v1",
        "signature_type": "Function",
        "id": "CVE-2026-23948-bfdbc648",
        "digest": {
            "function_hash": "45724886677385241037297634780496029147",
            "length": 859.0
        },
        "source": "https://github.com/freerdp/freerdp/commit/4d44e3c097656a8b9ec696353647b0888ca45860",
        "target": {
            "function": "rdp_write_logon_info_v2",
            "file": "libfreerdp/core/info.c"
        },
        "deprecated": false
    },
    {
        "signature_version": "v1",
        "signature_type": "Line",
        "id": "CVE-2026-23948-f6add5c7",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "303570308137007596241133626141409251069",
                "172206055707252354396494738938528294681",
                "177851478380184967999132012935321217321",
                "133474851341614138189052200250901149880",
                "149686881793546668771553315058884183438",
                "150076584959503601564475936708831910079",
                "194057982406646705393007491469310668470",
                "110574586751174827215913481814788370533",
                "81064420111355933664897814248294920029",
                "77542545665329044225037360310978838805",
                "58529151795256268344797828784330827848",
                "270441581498131049657371839922562455109",
                "27486731944105615811057150327580686535",
                "171049451127415432941949176490140030192",
                "183233678745431434199111828757168960887",
                "198856791512734167340600705933671601592",
                "124628853642793543083566204196081069369",
                "295244551128561400658523636062862669416",
                "20678181885798986216087982299654460067"
            ]
        },
        "source": "https://github.com/freerdp/freerdp/commit/4d44e3c097656a8b9ec696353647b0888ca45860",
        "target": {
            "file": "libfreerdp/core/info.c"
        },
        "deprecated": false
    }
]