CVE-2017-8570
Exploitation confirmed. First attested on 2022-02-25 by CISA-ADP, CISA KEV, GCVE · kevintel.
- Published2017-07-11
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
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.
Timeline
dates in UTC- 2017-07-1121:29CVE publishedNVD
- 2022-02-25Listed as exploited by GCVEGCVE
- 2022-02-25Added to the CISA KEV catalogCISA KEV
- 2022-02-25Exploitation first reportedCISA KEV
- 2025-02-1014:50SSVC exploitation set to activeCISA-ADP
- 2026-10-2319:23First public proof of conceptPoC-in-GitHub
- 2026-10-2319:23EPSS crossed 10 %FIRST EPSS
Observed activity
isMalicious corpus · updated 2026-10-23 18:48 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2017-8570?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2017-8570?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 2007.x | = 2007 | no fix published | NVD |
| 2010.x | = 2010 | no fix published | NVD |
| 2013.x | = 2013 | no fix published | NVD |
| 2016.x | = 2016 | no fix published | NVD |
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Fix
- CISA’s required action: Apply updates per vendor instructions.due 2022-08-25
Advisories and patches
- portal.msrc.microsoft.comPatch · Vendor Advisory
Detection
read 2026-10-23 19:23 UTC- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- 7 repositories, unverifiedtemesgeny/ppsx-file-generatorrxwx/CVE-2017-8570MaxSecurity/Office-CVE-2017-8570SwordSheath/CVE-2017-8570Drac0nids/CVE-2017-8570 PoC-in-GitHub
CISA Known Exploited Vulnerability
- Date Added
- 2022-02-25
- Patch Due Date
- 2022-08-25
- Ransomware Use
- Unknown
- Required Action
- Apply updates per vendor instructions.
Sources
- CISA KEVKEV entry2022-02-25
- GCVEexploitation2022-02-25
- CISA-ADPSSVC decisionactive2025-02-10
- OpenCVESSVC decisionactive—
- CISA-ADPCVSS 3.17.82025-02-10
- NVDCVSS 3.17.8read 2026-10-23
- NVDCVSS 2.09.3read 2026-10-23
- FIRST EPSSEPSS score89.9 %read 2026-10-23
- PoC-in-GitHubproof of concept7read 2026-10-23
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Published
- 2017-07-11
- Last Modified
- 2026-06-17
- NVD status
- Analyzed
Frequently asked questions
What is CVE-2017-8570?
Is CVE-2017-8570 actively exploited?
What is the CVSS score for CVE-2017-8570?
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.