FreeRDP before 3.32.1 Heap Buffer Overflow via rdpsnd_server_select_format
CVSS score
8.7
EPSS probability
—
Risk score
0.9
Published
5 h ago
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Impact on My Inventory
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Vulnerability description
DayBreach AI Explanation
Verified against sourcesSources read
2
Source agreement
0/2
Evidence confidence
%44
Short explanation
FreeRDP versions prior to 3.32.1 contain an integer wraparound in the server‑side rdpsnd channel’s rdpsnd_server_select_format function that allows a malicious client to send two SNDC_FORMATS PDUs with an nBlockAlign value too small for nChannels, causing a heap‑based buffer overflow during server audio playback and enabling potential code execution.
Remote code execution enables attackers to compromise RDP servers and move laterally within the network.
What should be done?
- Upgrade FreeRDP to version 3.32.1 or later
- Monitor vendor advisory and apply recommended patches
- Inspect RDP traffic for anomalous SNDC_FORMATS PDUs
- Employ network segmentation and an RDP gateway
2 alanda kaynak uyuşmazlığı var. DayBreach bu değerleri saklamadı; kaynak karşılaştırması aşağıda gösteriliyor.
Chain of evidence and sources
CVE-2026-114045, FreeRDP 3.32.1 öncesi sürümlerde rdpsnd_server_select_format işlevinde heap tabanlı tampon taşması içerir.
Bu zafiyet, kötü amaçlı bir RDP istemcisi iki SNDC_FORMATS PDU'su göndererek sunucu tarafında sınırsız heap yazısına yol açabilir ve kod yürütme sağlayabilir.
CVE-2026-114045 şu anda CISA KEV listesinde yer almamakta; aktif istismar kanıtı bulunmamaktadır.
Resmî kaynaklarda yama durumu doğrulanamadı; durum UNKNOWN olarak rapor edilmiştir.
Show the technical text from the sources
FreeRDP before 3.32.1 contains a heap-based buffer overflow in the server-side rdpsnd channel because an integer wraparound in rdpsnd_server_select_format() DVI_ADPCM block-alignment arithmetic bypasses validation. A malicious RDP client can send two SNDC_FORMATS PDUs with an nBlockAlign too small for nChannels, causing an unbounded heap write during server audio playback, potentially enabling code execution.
CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CWE: CWE-122
This explanation was compiled automatically from the source records. Scores, active exploitation, patch and exploit status come straight from the sources.
IMPACT: Affected Products and Software
Affected Products
The following products are affected by CVE-2026-114045 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.
| ID | VENDOR | PRODUCT | ACTION |
|---|---|---|---|
| 1 | freerdp | freerdp | View |
RED HAT CSAF/VEX: Product Impact Check
SCORING: CVSS from Multiple Sources
CVSS Scores
The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.
| SCORE | VERSION | SEVERITY | VECTOR | SOURCE |
|---|---|---|---|---|
| 8.8 | CVSS V3_1 | HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | CVE CNA |
| 8.8 | CVSS V31 | HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | NVD |
| 8.7 | CVSS V4_0 | HIGH | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | CVE CNA |
| 8.7 | CVSS V40 | HIGH | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | NVD |
Patch and Remediation Guide
Solution & Remediation Advisory
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Public exploit and active exploitation status
Verified exploit intelligence
No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.
Weakness Classification and Attack Patterns (CWE & CAPEC)
CWE - Common Weakness Enumeration
While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-114045 is associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-114045 weaknesses.
Attack Vector and Accessibility
Official Sources and Advisories
Similar Vulnerabilities
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