Which products and versions are affected by CVE-2015-1770?

Affected: Office (Microsoft) versions 2013-sp1. The full list is in the CVE brief.

Is CVE-2015-1770 being exploited in the wild?

It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Jul 1, 2018.

Is CVE-2015-1770 in the CISA KEV catalog?

Yes. It was added on Mar 28, 2022 with a federal remediation due date of Apr 18, 2022.

Is there a public exploit for CVE-2015-1770?

Public exploit code is available.

Is there a fix for CVE-2015-1770?

No fixed version is listed yet; check the vendor advisory for mitigations.

How urgently should CVE-2015-1770 be patched?

Brandefense priority: patch immediately, because it is listed as exploited in the wild.

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Vulnerability Intelligence

CVE-2015-1770

HighExploitedPublic exploit

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."

Published Jun 9, 2015 · Updated Apr 22, 2026

Key Facts

Patch immediately

CVE-2015-1770 is a high-severity vulnerability (CVSS 8.8 v3.1) affecting Office (Microsoft).
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Jul 1, 2018. Public exploit code is available.
EPSS estimates a 35% probability of exploitation in the next 30 days.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

CVSS v3.1

8.8

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

EPSS (30-day exploit likelihood)

35%

Higher than 98.4% of all scored CVEs

Exploited in the wild

Yes

4 catalog listings

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2015-1770 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

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."

Known-Exploited Catalog Listings

Catalog	Added	Remediation due	Ransomware use
CISA KEV	Mar 28, 2022	Apr 18, 2022	Not reported
Industry KEV feed	Jul 1, 2018	Apr 18, 2022	Not reported
CIRCL KEV	Mar 28, 2022	Apr 18, 2022	Not reported
ENISA EUVD	Mar 28, 2022	n/a	Not reported

Required action: Apply updates per vendor instructions.

Affected Products

2 affected entries in total

Product	Affected versions	Fixed in
OfficeMicrosoft	2013-sp1	n/a

Timeline

Publicly disclosed
Jun 9, 2015
Added to Industry KEV feed
Jul 1, 2018
Added to CISA KEV
Mar 28, 2022
Added to CIRCL KEV
Mar 28, 2022
Added to ENISA EUVD
Mar 28, 2022
Last updated
Apr 22, 2026

Weakness Type

CWE-824 Access of Uninitialized Pointer

References

3 more references in the full CVE brief

FAQ

Common Questions.

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."
Affected: Office (Microsoft) versions 2013-sp1. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Jul 1, 2018.
Yes. It was added on Mar 28, 2022 with a federal remediation due date of Apr 18, 2022.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

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