CVE-2025-71470
MicroQuickJS before commit 99eed3f Out-of-Bounds Read in build_backtrace
Description
MicroQuickJS (mquickjs) before commit 99eed3f contains an out-of-bounds read vulnerability because JS_Call() raises exceptions during frame setup without updating ctx->sp and ctx->fp. Attackers can supply JavaScript that calls a non-function value, causing build_backtrace() to walk stale frame pointers and crash the engine for denial of service.
INFO
Published Date :
Nov. 15, 2026, 4:16 p.m.
Last Modified :
Nov. 15, 2026, 4:16 p.m.
Remotely Exploit :
No
Source :
[email protected]
Affected Products
The following products are affected by CVE-2025-71470
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 3.1 | MEDIUM | MITRE-CVE | ||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 4.0 | MEDIUM | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Update MicroQuickJS to commit 99eed3f or later.
- Apply necessary patches for exception handling.
- Validate frame pointer updates during exception handling.
- Rebuild and redeploy the application.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-71470.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-71470 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-2025-71470
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-71470 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-71470 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by [email protected]
Nov. 15, 2026
Action Type Old Value New Value Added Description MicroQuickJS (mquickjs) before commit 99eed3f contains an out-of-bounds read vulnerability because JS_Call() raises exceptions during frame setup without updating ctx->sp and ctx->fp. Attackers can supply JavaScript that calls a non-function value, causing build_backtrace() to walk stale frame pointers and crash the engine for denial of service. Added CVSS V4.0 AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/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 Added CVSS V3.1 AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Added CWE CWE-125 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2025/71xxx/CVE-2025-71470.json">CVE-2025-71470</a> Added Reference https://github.com/bellard/mquickjs/commit/99eed3f94cb66ea7e02fd3472ca7374dee31bb89 Added Reference https://github.com/bellard/mquickjs/issues/24 Added Reference https://github.com/sigdevel/pocs/blob/main/res/mquickjs/1/mquickjs_c_3981 Added Reference https://www.vulncheck.com/advisories/microquickjs-before-commit-99eed3f-out-of-bounds-read-in-build-backtrace