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CVE-2015-1770

80
FAUCET Score

CVE-2015-1770 is an uninitialized memory use vulnerability in Microsoft Office 2013 SP1 and 2013 RT SP1, allowing remote attackers to execute arbitrary code via a crafted Office document. It carries a high CVSS score of 8.8, indicating a critical risk due to its network-based attack vector, low complexity, and high impact on confidentiality, integrity, and availability. This vulnerability has been actively exploited in the wild, as confirmed by its presence in the KEV catalog and media coverage detailing its use in East Asia APT attacks, despite a lack of public exploit code in Metasploit or ExploitDB. The high EPSS score and significant community discussion further underscore its importance.

Impacted Technologies

VendorProductVersion(s)CPE
2013CPE matchmatch criteria
cpe:2.3:a:microsoft:office:2013:sp1:*:*:-:*:*:*
2013CPE matchmatch criteria
cpe:2.3:a:microsoft:office:2013:sp1:*:*:rt:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
35.10%
Probability of exploitation in next 30 days
EPSS Percentile
98.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
Added to KEV · Mar 28, 2022
This CVE's current EPSS score of 0.3510 is in the 99th percentile among its peer group of 14,825 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
docs.microsoft.com / en-us/security-updates/securitybulletins/2015/ms15-059
PatchVendor Advisory
securityfocus.com / bid/75016
Broken LinkThird Party AdvisoryVDB Entry
securitytracker.com / id/1032523
Broken LinkThird Party AdvisoryVDB Entry