vciy

CVE-2017-8570

INDEX BUILT · 2026-09-20

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

CVE-2017-85704 of 4 sources documented this
71

rank 71 = 40 + 20 + 0 + 5 + 6

rank@v1 · act now

Someone is already using it

CISA KEV catalog · public proof-of-concept · FIRST EPSS

EPSS 0.89889 · CISA KEV listed  ·  without this subject the record ranks 31

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 7.8, from NVD  ·  without this subject the record ranks 51

It is getting worse, not staying still

FIRST EPSS series, rescorings and bad loads removed

no persisting rise in 365 days  ·  without this subject the record ranks 71

How much of the world it touches

NVD CPE configurations

4 products in the CPE ranges  ·  without this subject the record ranks 66

Someone else already set the date

CISA KEV remediation due date

CISA remediation date held  ·  without this subject the record ranks 65

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$4.49Mover the next 30 days, if this record is yours
Movement+$1.56Mon 2022-02-04, the last material move, 4 years, 7 months before this reading
Basisassumeda published average, not your estate

$4.49M = $4.99M incident cost x 1 exposure x 0.89889 likelihood

udv@v1 · unaudited · wrong for you until you say what you run

$4.99M is the cost of a breach that happened, from IBM Cost of a Data Breach Report 2026, global average. It is not the value of any asset of yours. That average already covers breaches of every severity, so scaling it by exposure understates a partial-impact record. That is an assumption, not a measurement. Your own asset value goes in the decision record.

Hindsight · the state

0.89889EPSSKEV · LISTED
Severity7.8 HIGHreceipt
Harmtotal lossreceipt
Exploitationin the wild · KEVreceipt
Defenseno fix version held
Movementrisenreceipt
PLATEAU10Minimal movement since 2022-02-04, 1673 days at 0.90, as of 2026-09-04. arc-rules@v1

Foresight · where to check next

No weakness class or product neighbourhood is held for this record, so this index cannot name anywhere to check next. That is an absence in the record, not a finding about the software.

Color is a claim, not decoration:the hostile worldthe defenseno signal

Running Microsoft Office 2016.? Check your version

A deterministic range check against the ranges this record publishes. It tells you where a version sits in the record, not whether your deployment is exploitable. No account needed.

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Harm, if it fires from the vector and the weakness

Written for the ticket you're about to file.

Reachneeds local access · no privileges required · user interaction required · low attack complexityreceipt
ImpactComplete confidentiality, integrity and availability lossreceipt
Scored fromCVSS v3.1 · NVD's vectorreceipt
Weakness classNo CWE mapping in held sources.
Ransomware campaign useUnknown to CISAreceipt

CISA KEV & Federal Remediation Deadline from the record and CISA

The fix, and how long it's been waiting.

Fixed inNo fix version in held sources, as the index stood on 4 Sep 2026.
Patch available sinceNo dated patch-availability record in held sources. The index holds reference URLs without dates and only the current revision of the CVE record, so the day a fix first existed cannot be derived. Only the versions it landed in.
CISA remediation statusoverdue since 2022-08-25receipt
CISA required actionApply updates per vendor instructions.receipt
Published to CISA KEV1690 daysderived

Exploit Status & Known PoCs a ladder, not a score

Current rung: Exploited in the wild · CISA KEV listed, 2022-02-25.

  • RUNG 1Nothing observed in held sources
  • RUNG 2Proof-of-concept published · 7 public repositories2017-07-24receipt
  • RUNG 3Exploited in the wild · CISA KEV listed2022-02-25receipt
  • RUNG 4Ransomware campaign use known

Authority who says so

CVSS, NVD7.8 HIGHreceipt
Exploit probability0.89889 · top 0.21% of all CVEsreceipt
Blast breadth1 product across 1 vendorderived
Assigned bymicrosoftreceipt
Recorded changes38 · last 19 Sep 2026derived

Affected & Fixed Versions as published

Affected productMicrosoft Corporation Microsoft Office 2007 SP3, Microsoft Office 2010 SP2, Microsoft Office 2013 SP1, and Microsoft Office 2016.receipt
Published rangesmicrosoft office 2007; microsoft office 2010; microsoft office 2013; microsoft office 2016receipt

A rung lights from a row in the index, never from an assessment. "Held sources" is the true scope of the claim: this index reads the CVE record, NVD, CISA KEV, FIRST's EPSS and public proof-of-concept repositories, and it does not observe attacks.

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What it is stated by the CNA

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. receipt

NVD's analysis a second authority

severity
7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
affected versions
microsoft office 2007; microsoft office 2010; microsoft office 2013; and 1 more, listed in full below
also scored by
7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

check it yourself securityfocus.com github.com github.com portal.msrc.microsoft.com github.com receipt

Dated events

2022-02-04EPSS moved 0.59 to 0.902022-02-25Added to CISA KEV2022-08-25CISA remediation due2023-03-07EPSS moved 0.90 to 0.972026-06-15EPSS moved 0.94 to 0.90

Movement the material steps

14 Apr 20210.5896
4 Feb 20220.90147 · crossed 0.90
7 Mar 20230.97471 · scoring model v2023.03.01
17 Mar 20250.94247 · scoring model v2025.03.14
15 Jun 20260.89889 · crossed 0.90 · scoring model v2026.06.15
28 Aug 20260.89889
Show all 24 observations
14 Apr 20210.5896
4 Feb 20220.90147
7 Mar 20230.97471
27 Mar 20230.97461
21 May 20230.97430
21 Jun 20230.97412
27 Jul 20230.97430
6 Sep 20230.97337
15 Oct 20230.97287
26 Nov 20230.97339
23 Jul 20240.97307
11 Aug 20240.96448
12 Aug 20240.97307
2 Sep 20240.97276
11 Oct 20240.97320
17 Dec 20240.94317
23 Jan 20250.93973
17 Mar 20250.94247
18 Nov 20250.932
21 Nov 20250.94247
23 Apr 20260.94216
15 Jun 20260.89889
24 Jul 20260.85608
28 Aug 20260.89889

24 observations held. A highlighted step crossed a promotion threshold. A step marked with a scoring model moved because the instrument was replaced, not because the vulnerability changed. receipt

The full biography

EPSS 0.89889Published2017-07-11Public PoC2017-07-24CISA KEV2022-02-25Index as of2026-09-04

Listed by CISA 1690 days after it published and the record had been public for 9 years, 1 month when this index was last written.

Published 2017-07-11 receipt · Public PoC 2017-07-24 receipt · CISA KEV 2022-02-25 receipt · Index as of 2026-09-04 derived

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