CVE-2026-9521

LOW EPSS 31.9%
Published May 26, 20261mo ago · Modified Jun 17, 20262w ago
2.9 CVSS 4.0
Low
Find Similar
Published May 26, 2026 1mo ago
Last Modified Jun 17, 2026 2w ago

Description

A security vulnerability has been detected in fraillt bitsery up to 5.2.4. Affected is the function loadFromSharedState in the library include/bitsery/ext/std_smart_ptr.h. Such manipulation leads to improper validation of specified type of input. It is possible to launch the attack remotely. The exploit has been disclosed publicly and may be used. Upgrading to version 5.2.5 is able to address this issue. The name of the patch is 66d16516e24893bebc1c8af52bf2fe9ad0735061. Upgrading the affected component is advised.

CVSS Details

Base Score
2.9
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
31.9% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 2

CWE-1287
CWE-20 Improper Input Validation Validation

References 8

  • gist.github.com https://gist.github.com/TrebledJ/750abc64a826f19dd2d6774724629b71
  • github.com https://github.com/fraillt/bitsery/
  • github.com https://github.com/fraillt/bitsery/blob/master/CHANGELOG.md#525-2025-10-09
  • github.com https://github.com/fraillt/bitsery/commit/66d16516e24893bebc1c8af52bf2fe9ad0735061
  • github.com https://github.com/fraillt/bitsery/releases/tag/v5.2.5
  • vuldb.com https://vuldb.com/submit/814457
  • vuldb.com https://vuldb.com/vuln/365541
  • vuldb.com https://vuldb.com/vuln/365541/cti

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.