CVE-2015-1641

HIGH KEV RANSOMWARE

Microsoft Office - Remote Code Execution via Crafted RTF Document

Title source: llm
STIX 2.1

Exploitation Summary

CVE-2015-1641 is actively exploited and listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added November 3, 2021, with confirmed use in ransomware campaigns. EIP tracks 1 public exploit from researchers including Cyberclues.

AI-analyzed exploit summary This repository contains a Python script designed to extract malicious payloads and decoy documents from RTF files exploiting CVE-2015-1641. The script identifies markers within the RTF file, decrypts the payload using XOR, and saves the extracted content.

Description

Microsoft Word 2007 SP3, Office 2010 SP2, Word 2010 SP2, Word 2013 SP1, Word 2013 RT SP1, Word for Mac 2011, Office Compatibility Pack SP3, Word Automation Services on SharePoint Server 2010 SP2 and 2013 SP1, and Office Web Apps Server 2010 SP2 and 2013 SP1 allow remote attackers to execute arbitrary code via a crafted RTF document, aka "Microsoft Office Memory Corruption Vulnerability."

Exploits (1)

nomisec WORKING POC 23 stars
by Cyberclues · poc
https://github.com/Cyberclues/rtf_exploit_extractor

This repository contains a Python script designed to extract malicious payloads and decoy documents from RTF files exploiting CVE-2015-1641. The script identifies markers within the RTF file, decrypts the payload using XOR, and saves the extracted content.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Microsoft Office (RTF parsing)
No auth needed
Prerequisites: Exploit document (RTF file) containing CVE-2015-1641 payload
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (4)

Core 4
Core References
Broken Link, Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1032104
Broken Link, Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/73995
Patch, Vendor Advisory vendor-advisory x_refsource_ms
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-033

Scores

CVSS v3 7.8
EPSS 0.9733
EPSS Percentile 99.9%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation active
Automatable no
Technical Impact total

Details

CISA KEV 2021-11-03
VulnCheck KEV 2015-04-14
InTheWild.io 2015-04-14
ENISA EUVD EUVD-2015-1771
Ransomware Use Confirmed
CWE
CWE-787
Status published
Products (11)
microsoft/office 2010 sp2
microsoft/office_compatibility_pack
microsoft/office_web_apps 2010 sp2
microsoft/office_web_apps 2013 sp1
microsoft/outlook 2011
microsoft/sharepoint_server 2010 sp2
microsoft/sharepoint_server 2013 sp1
microsoft/word 2007 sp3
microsoft/word 2010 sp2
microsoft/word 2011
... and 1 more
Published Apr 14, 2015
KEV Added Nov 03, 2021
Tracked Since Feb 18, 2026