X.org X11 Server TigerVNC out-of-bounds

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.8$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in X.org X11 Server. This issue affects some unknown processing of the component TigerVNC. Executing a manipulation can lead to out-of-bounds. This vulnerability is tracked as CVE-2025-49175. The attack is restricted to local execution. No exploit exists.

Detailsinfo

A vulnerability was found in X.org X11 Server (affected version unknown). It has been declared as problematic. This vulnerability affects an unknown functionality of the component TigerVNC. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect availability. CVE summarizes:

A flaw was found in the X Rendering extension's handling of animated cursors. If a client provides no cursors, the server assumes at least one is present, leading to an out-of-bounds read and potential crash.

The advisory is shared for download at access.redhat.com. This vulnerability was named CVE-2025-49175 since 06/03/2025. The exploitation appears to be easy. The attack needs to be approached locally. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 240228 (Fedora 42 : xorg-x11-server-Xwayland (2025-b4d521f084)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (240228) and EUVD (EUVD-2025-18502). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Vendor

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License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.8
VulDB Meta Temp Score: 5.8

VulDB Base Score: 5.5
VulDB Temp Score: 5.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 6.1
CNA Vector (redhat): 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 240228
Nessus Name: Fedora 42 : xorg-x11-server-Xwayland (2025-b4d521f084)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

06/03/2025 CVE reserved
06/17/2025 +14 days Advisory disclosed
06/17/2025 +0 days VulDB entry created
06/30/2025 +13 days VulDB entry last update

Sourcesinfo

Vendor: x.org

Advisory: access.redhat.com
Status: Confirmed

CVE: CVE-2025-49175 (🔒)
GCVE (CVE): GCVE-0-2025-49175
GCVE (VulDB): GCVE-100-312712
EUVD: 🔒

Entryinfo

Created: 06/17/2025 16:53
Updated: 06/30/2025 12:22
Changes: 06/17/2025 16:53 (62), 06/17/2025 18:36 (1), 06/21/2025 17:35 (2), 06/23/2025 09:21 (1), 06/30/2025 12:22 (4)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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