FreeRDP 3.3.0 before 3.32.0 Heap Out-of-Bounds Write via Grayscale JPEG Clipboard Data
CVSS score
7.1
EPSS probability
%0.2
Risk score
0.0
Published
4 d ago
Kanıt listesindeki ürün ve sürüm eşleşmesini kontrol edin; bazı varyantlar hâlâ etkileniyor olabilir.
Impact on My Inventory
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Vulnerability description
CVE AI research
DayBreach AI Explanation
Verified against sourcesSources read
2
Source agreement
0/2
Evidence confidence
%53
Short explanation
FreeRDP versions 3.3.0 before 3.32.0, when built with WINPR_UTILS_IMAGE_JPEG=ON, contain a heap-based out-of-bounds write vulnerability in winpr_convert_from_jpeg. A malicious RDP server can offer a grayscale JPEG via clipboard redirection, causing memory corruption and client crashes.
This vulnerability allows a malicious RDP server to corrupt client memory and crash the client application. The attack vector involves clipboard redirection and pasting grayscale JPEG data.
What should be done?
- Monitor vendor advisories and security bulletins
- Consider updating to unaffected versions
- Limit clipboard redirection features where not required
1 alanda kaynak uyuşmazlığı var. DayBreach bu değerleri saklamadı; kaynak karşılaştırması aşağıda gösteriliyor.
Chain of evidence and sources
FreeRDP 3.3.0 ile 3.32.0 sürümleri arasında WINPR_UTILS_IMAGE_JPEG=ON ile derlenen sürümlerde yığın tabanlı sınır dışı yazma açığı bulunmaktadır.
Kötü amaçlı bir RDP sunucusu, pano yönlendirmesiyle gri tonlamalı JPEG sunarak istemci belleğini bozabilir ve çökertebilir.
Show the technical text from the sources
FreeRDP 3.3.0 before 3.32.0, when built with WINPR_UTILS_IMAGE_JPEG=ON, has a heap-based out-of-bounds write in winpr_convert_from_jpeg because grayscale JPEG buffers are sized from one input component rather than three BGR output components. A malicious RDP server can offer a grayscale JPEG via clipboard redirection, corrupting client memory and crashing it when the item is pasted as CF_DIB bitmap data.
CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
CWE: CWE-787
Explanation produced with the local gemini-flash-lite-latest model. Numerical metrics and the KEV, patch and exploit statuses are not determined by AI.
IMPACT: Affected Products and Software
Affected Products
The following products are affected by CVE-2026-110839 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.
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 |
|---|---|---|---|---|
| 7.1 | CVSS V31 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H | NVD |
| 7.1 | CVSS V40 | HIGH | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/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 |
| 7.1 | CVSS V4_0 | HIGH | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N | CVE CNA |
| 7.1 | CVSS V3_1 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H | CVE CNA |
Patch and Remediation Guide
Solution & Remediation Advisory
2 düzeltme kanıtı bulundu; en az 2 ürün veya sürüm hâlâ etkileniyor ya da inceleniyor.
3.32.0+dfsg-1Debian sid: 3.32.0+dfsg-1
3.32.0+dfsg-1Debian forky: 3.32.0+dfsg-1
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-2026-110839 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-2026-110839 weaknesses.
Attack Vector and Accessibility
Official Sources and Advisories
Similar Vulnerabilities
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