How severe is CVE-2015-1770?

CVE-2015-1770 has a CVSS 3.1 base score of 8.8 (HIGH). EPSS estimates a 35.0% probability of exploitation in the next 30 days. It is listed in the CISA Known Exploited Vulnerabilities catalog.

CVE-2015-1770: Microsoft Office Uninitialized Memory Use Vulnerability

CISA Known Exploited Vulnerabilities

Microsoft Office Uninitialized Memory Use Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.

Added to KEV

2022-03-28

Remediation due

2022-04-18

Required action
Apply updates per vendor instructions.

CISA notes
https://nvd.nist.gov/vuln/detail/CVE-2015-1770

Description

Microsoft Office 2013 SP1 and 2013 RT SP1 allows remote attackers to execute arbitrary code via a crafted Office document, aka "Microsoft Office Uninitialized Memory Use Vulnerability."

Severity

CVSS 3.1 · CISA8.8 HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

SSVC · CISA-ADP

Exploitationactive

Automatableno

Technical impacttotal

Exploitation Context

as of October 14, 2026

All KEV statistics→

CISA added CVE-2015-1770 to the KEV catalog 2,483 days after its CVE record was published.
It is one of 391 Microsoft entries in the CISA KEV catalog, and one of 166 added in 2022.
Its current EPSS score (35.0%) is higher than that of 44% of CISA KEV entries.

Affected Products

Vendor	Product	Affected versions
-	-	n/a

References

3 Links

Vendor advisories

MS15-059

Vulnerability databases

Record Details

Published

2015-06-10

Last updated

2025-10-21

Assigner (CNA)

microsoft

Credited to

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CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.