CVE-2026-88340
Quick assessment
Affected
n/a n/a
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
An invalid pointer release vulnerability exists in YARA 4.5.8 during deserialization of compiled .yrc rule files. The vulnerability is caused by insufficient validation of external-variable pointers, which may lead to invalid free in yr_rules_destroy() or wild
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I. Basic Information for CVE-2026-88340
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
An invalid pointer release vulnerability exists in YARA 4.5.8 during deserialization of compiled .yrc rule files. The vulnerability is caused by insufficient validation of external-variable pointers, which may lead to invalid free in yr_rules_destroy() or wild pointer access in yr_object_create(). An attacker can provide a specially crafted .yrc file that causes memory corruption and application crash.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| - | n/a | n/a | - |
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II. Public POCs for CVE-2026-88340
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2026-88340 (3)
Same Patch Batch · n/a · 2026-09-22 · 21 CVEs total
| CVE-2026-94490 | 4.7 MEDIUM | OctoPrint Command API system.py executeSystemCommand os command injection |
| CVE-2026-88339 | CVE-2026-88339 | |
| CVE-2026-88350 | CVE-2026-88350 | |
| CVE-2026-88341 | CVE-2026-88341 | |
| CVE-2026-88345 | CVE-2026-88345 | |
| CVE-2026-88344 | CVE-2026-88344 | |
| CVE-2026-75432 | CVE-2026-75432 | |
| CVE-2026-37603 | CVE-2026-37603 | |
| CVE-2026-37604 | CVE-2026-37604 | |
| CVE-2026-88414 | CVE-2026-88414 | |
| CVE-2026-79311 | CVE-2026-79311 | |
| CVE-2026-88416 | CVE-2026-88416 | |
| CVE-2026-88418 | CVE-2026-88418 | |
| CVE-2026-88415 | CVE-2026-88415 | |
| CVE-2026-88419 | CVE-2026-88419 | |
| CVE-2026-88624 | CVE-2026-88624 | |
| CVE-2026-79314 | CVE-2026-79314 | |
| CVE-2026-79313 | CVE-2026-79313 | |
| CVE-2026-79312 | CVE-2026-79312 | |
| CVE-2026-79315 | CVE-2026-79315 |
IV. Related Vulnerabilities
V. Comments for CVE-2026-88340
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