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CVE-2023-48105

23
FAUCET Score

CVE-2023-48105 is a heap overflow vulnerability in Bytecode Alliance's wasm-micro-runtime (Wasm-Micro-Runtime) version 1.2.3, specifically within the wasm_loader_prepare_bytecode function. This flaw allows a remote attacker to trigger a denial of service. It carries a CVSS v3.1 score of 7.5 (High), indicating a critical severity due to its network-based attack vector and low attack complexity, leading to high availability impact. Currently, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
1.2.3CPE matchmatch criteria
cpe:2.3:a:bytecodealliance:webassembly_micro_runtime:1.2.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.99%
Probability of exploitation in next 30 days
EPSS Percentile
58.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0099 is in the 34th percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (5)

github_advisorypatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: 18243-16823Fixed in: 2.1.10-2
microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 x64Fixed in: 2.1.10-2
microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 ARMFixed in: 2.1.10-2
microsoftpatch availablevia msrc
Product: cbl2 fluent-bit 2.1.10-2 on CBL Mariner 2.0Fixed in: 2.1.10-2

Vendor Advisories (2)

microsoft2023-Dec/CVE-2023-48105

CVE-2023-48105

Dec 12, 2023
microsoft2023-Nov/CVE-2023-48105Important

An heap overflow vulnerability was discovered in Bytecode alliance wasm-micro-runtime v.1.2.3 allows a remote attacker to cause a denial of service via the wasm_loader_prepare_bytecode function in core/iwasm/interpreter/wasm_loader.c.

Nov 14, 2023

References

github.com / bytecodealliance/wasm-micro-runtime/issues/2726
ExploitIssue TrackingPatch
github.com / bytecodealliance/wasm-micro-runtime/pull/2734/commits/4785d91b16dd49c09a96835de2d9c7b077543fa4
Patch