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Fencer Vulns
high 7.8

CVE-2017-8570 kev in the critical feed json

Microsoft Office allows a remote code execution vulnerability due to the way that it handles objects in memory, aka "Microsoft Office Remot…

published 2017-07-11 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-17520

cvss
7.8
version 3.1, CNA
cisa kev
Exploited
added 2022-02-25
epss
89.9%
EPSS 89.9% chance of exploitation in 30 days, percentile 99.7%
public exploits
1
Exploit-DB

Summary

Microsoft Office allows a remote code execution vulnerability due to the way that it handles objects in memory, aka "Microsoft Office Remote Code Execution Vulnerability". This CVE ID is unique from CVE-2017-0243.

Patch / fix

cisa required action Apply updates per vendor instructions.

Timeline

  1. Published
  2. First public exploit (EDB-44263)
  3. Added to CISA KEV
  4. CISA patch deadline
  5. CISA SSVC: exploitation active

Known exploited

Added
4 y ago
Patch by
2022-08-25 (4 y ago)
Ransomware
Not known
Required action
Apply updates per vendor instructions.
Vendor, product
Microsoft, Office
CISA name
Microsoft Office Remote Code Execution Vulnerability

CISA SSVC

Exploitation
Active, exploited in the wild
Automatable
no
Technical impact
total
Assessed
20 mo ago

Exploit prediction

89.89% chance of exploitation in the next 30 days, higher than 99.7% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-44263 Microsoft Office - 'Composite Moniker Remote Code Execution local, 2018-01-09
  • github.com https://github.com/tezukanice/Office8570 referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/ParsingTeam/ppsx-file-generator referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 9.3 AV:N/AC:M/Au:N/C:C/I:C/A:C

Affected products

  • Microsoft Corporation Microsoft Office 2007 SP3, Microsoft Office 2010 SP2, Microsoft Office 2013 SP1, and Microsoft Office 2016.

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.