CVE-2026-3463

LOW EPSS 9.4%
Published Mar 3, 20264mo ago · Modified Jun 17, 20262w ago
1.9 CVSS 4.0
Low
Find Similar
Published Mar 3, 2026 4mo ago
Last Modified Jun 17, 2026 2w ago

Description

A weakness has been identified in xlnt-community xlnt up to 1.6.1. Impacted is the function xlnt::detail::binary_writer::append of the file source/detail/binary.hpp of the component Compound Document Parser. This manipulation causes heap-based buffer overflow. The attack can only be executed locally. The exploit has been made available to the public and could be used for attacks. Patch name: 147. It is suggested to install a patch to address this issue.

CVSS Details

Base Score
1.9
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/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 Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
9.4% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 2

CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer Memory Safety
CWE-122

Affected Products 1

VendorProductVersionRange
xlnt-communityxlnt* ≤1.6.1

References 8

  • github.com https://github.com/oneafter/0128/blob/main/xl2/repro
    Exploit
  • github.com https://github.com/xlnt-community/xlnt/
    Product
  • github.com https://github.com/xlnt-community/xlnt/issues/138
    ExploitIssue TrackingVendor Advisory
  • github.com https://github.com/xlnt-community/xlnt/issues/138#issuecomment-3868381672
    Issue Tracking
  • github.com https://github.com/xlnt-community/xlnt/pull/147
    Issue Tracking
  • vuldb.com https://vuldb.com/?ctiid.348530
    Permissions RequiredVDB Entry
  • vuldb.com https://vuldb.com/?id.348530
    Third Party AdvisoryVDB Entry
  • vuldb.com https://vuldb.com/?submit.764643
    Third Party AdvisoryVDB Entry

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.