PT-2026-58561 · Microsoft · Office

CVE-2026-55057 · Published 2026-07-14 · Updated 2026-07-14

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Microsoft Office (affected versions not specified)

Description An integer overflow or wraparound occurs in Microsoft Office, which could allow an unauthorized attacker to disclose sensitive information locally and affect the system. An integer overflow is a condition where an arithmetic operation attempts to create a numeric value that is outside of the range that can be represented with a given number of bits.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Integer Overflow

Weakness Enumeration

CWE-190

Related Identifiers

CVE-2026-55057

Affected Products

Office

References · 3

• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-55057 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55057 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-55057 · Security Note