Bytecode Alliance Wasmtime up to 48.0.3/49.0.1 WASIp3 Implementation set-times/set-times-at denial of service

CVSS Meta Temp Score
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CTI Interest Score
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4.7$0-$5k1.24

Summaryinfo

A vulnerability marked as problematic has been reported in Bytecode Alliance Wasmtime up to 48.0.3/49.0.1. The impacted element is the function set-times/set-times-at of the component WASIp3 Implementation. This manipulation causes denial of service. This vulnerability appears as CVE-2026-115385. The attack requires local access. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Bytecode Alliance Wasmtime up to 48.0.3/49.0.1 and classified as problematic. Affected by this vulnerability is the function set-times/set-times-at of the component WASIp3 Implementation. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability. The summary by CVE is:

Wasmtime 46.0.0 before 48.0.4 and 49.0.0 before 49.0.2 contains a denial of service vulnerability in the wasmtime-wasi WASIp3 implementation that allows guests to abort the Unix host process. Guests with mutable preopened directory access can call set-times or set-times-at with negative seconds timestamps before the epoch, triggering an assertion failure that crashes the host.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-115385 since 10/22/2026. The exploitation appears to be easy. Attacking locally is a requirement. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 48.0.4 or 49.0.2 eliminates this vulnerability.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 4.7
VulDB Meta Temp Score: 4.7

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 6.2
CNA Vector (VulnCheck): 🔒

CVSSv2info

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

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Wasmtime 48.0.4/49.0.2

Timelineinfo

10/22/2026 Advisory disclosed
10/22/2026 +0 days CVE reserved
10/22/2026 +0 days VulDB entry created
10/22/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: github.com
Status: Confirmed

CVE: CVE-2026-115385 (🔒)
GCVE (CVE): GCVE-0-2026-115385
GCVE (VulDB): GCVE-100-425443

Entryinfo

Created: 10/22/2026 22:19
Changes: 10/22/2026 22:19 (77)
Complete: 🔍
Cache ID: 216::103

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