BitVisor VirtIO Network Device Emulation out-of-bounds write

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in BitVisor. The impacted element is an unknown function of the component VirtIO Network Device Emulation. Such manipulation leads to out-of-bounds write. This vulnerability is traded as CVE-2025-61553. An attack has to be approached locally. There is no exploit available. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability was found in BitVisor (version unknown) and classified as critical. Affected by this issue is an unknown function of the component VirtIO Network Device Emulation. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. Using CWE to declare the problem leads to CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. CVE summarizes:

An out-of-bounds write in VirtIO network device emulation in BitVisor from commit 108df6 (2020-05-20) to commit 480907 (2025-07-06) allows local attackers to cause a denial of service (host hypervisor crash) via a crafted PCI configuration space access. Given it's a heap overflow in a privileged hypervisor context, exploitation may enable arbitrary code execution or guest-to-host privilege escalation.

The advisory is available at sourceforge.net. This vulnerability is handled as CVE-2025-61553 since 09/26/2025. The exploitation is known to be easy. Local access is required to approach this attack. The technical details are unknown and an exploit is not available.

Applying the patch 48090711ade5910b601d2b0034859a6a890cc82d is able to eliminate this problem. The bugfix is ready for download at sourceforge.net.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-34828). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / 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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Patch: 48090711ade5910b601d2b0034859a6a890cc82d

Timelineinfo

09/26/2025 CVE reserved
10/16/2025 +20 days Advisory disclosed
10/16/2025 +0 days VulDB entry created
10/17/2025 +1 days VulDB entry last update

Sourcesinfo

Advisory: 48090711
Status: Confirmed

CVE: CVE-2025-61553 (🔒)
GCVE (CVE): GCVE-0-2025-61553
GCVE (VulDB): GCVE-100-328874
EUVD: 🔒

Entryinfo

Created: 10/16/2025 21:59
Updated: 10/17/2025 05:53
Changes: 10/16/2025 21:59 (55), 10/17/2025 05:53 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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