CVE-2020-1104

MEDIUMNVD 5.45.4—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.4 under NVD CVSS v3. EPSS exploit probability: 1.6%, top 26% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Trending — 4 sources updated this week
5.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 2%CVSS: 5.4Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

A spoofing vulnerability exists when Microsoft SharePoint Server does not properly sanitize a specially crafted web request to an affected SharePoint server. An authenticated attacker could exploit the vulnerability by sending a specially crafted request to an affected SharePoint server. The attacker who successfully exploited the vulnerability could then perform cross-site scripting attacks on affected systems and run script in the security context of the current user. These attacks could allow the attacker to read content that the attacker is not authorized to read, use the victim's identity to take actions on the SharePoint site on behalf of the user, such as change permissions and delete content, and inject malicious content in the browser of the user. The security update addresses the vulnerability by helping to ensure that SharePoint Server properly sanitizes web requests.

CVSS v3
5.4
EG Score
5.4(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity54% × 45%
Exploitation2% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
2%
EPSS %ILE
75%
KEV
Not listed

Published

May 21, 2020

Last Modified

August 19, 2026

Advisory Details (2)

Auto-updated Aug 19, 2026
Patch available. Sources: microsoft.
microsoft Patch Available

Security Update Guide - Microsoft Security Response Center

Security Update Guide - Microsoft Security Response Center. Patch available via Microsoft Security Update

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1104
microsoft Patch Available

Security Update Guide - Microsoft Security Response Center

Security Update Guide - Microsoft Security Response Center. Patch available via Microsoft Security Update

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-1104

Vendor Advisories for CVE-2020-1104(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 10× in last 7d / 34× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 127 total refreshes for this CVE.

  1. 2026-08-20 22:52 UTCEPSS rescore
  2. 2026-08-19 18:10 UTCEG score recompute
  3. 2026-08-19 18:10 UTCVendor advisory
  4. 2026-08-19 18:10 UTCGHSA enrichment
  5. 2026-08-19 17:00 UTCEPSS rescore
  6. 2026-08-18 13:44 UTCEPSS rescore
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  11. 2026-08-13 21:57 UTCEPSS rescore
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  1. 2026-07-27 14:06 UTCEPSS rescore
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  5. 2026-07-24 14:14 UTCEPSS rescore
  6. 2026-07-23 14:15 UTCEPSS rescore
  7. 2026-07-23 14:15 UTCEPSS rescore
  8. 2026-07-23 01:48 UTCEG score recompute
  9. 2026-07-22 22:32 UTCEG score recompute
  10. 2026-07-22 14:05 UTCEPSS rescore
  11. 2026-07-21 15:22 UTCEPSS rescore
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  13. 2026-07-20 17:04 UTCEPSS rescore
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  19. 2026-07-16 16:59 UTCEPSS rescore
  20. 2026-07-15 16:55 UTCEPSS rescore
  21. 2026-07-15 01:57 UTCEPSS rescore
  22. 2026-07-13 22:27 UTCEPSS rescore
  23. 2026-07-13 22:27 UTCEPSS rescore
  24. 2026-07-13 06:10 UTCEPSS rescore
  25. 2026-07-13 06:10 UTCEPSS rescore
  26. 2026-07-12 05:44 UTCEPSS rescore
  27. 2026-07-11 08:25 UTCEPSS rescore
  28. 2026-07-11 08:25 UTCEPSS rescore
  29. 2026-07-09 19:07 UTCEPSS rescore
  30. 2026-07-08 15:12 UTCEPSS rescore
  31. 2026-07-07 13:43 UTCEPSS rescore
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  40. 2026-07-01 15:03 UTCEPSS rescore
  41. 2026-06-30 23:20 UTCEPSS rescore
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  43. 2026-06-29 14:04 UTCEPSS rescore
  44. 2026-06-28 14:05 UTCEPSS rescore
  45. 2026-06-28 04:54 UTCEPSS rescore
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  47. 2026-06-27 03:06 UTCEPSS rescore
  48. 2026-06-25 13:47 UTCEPSS rescore
  49. 2026-06-24 14:03 UTCEPSS rescore
  50. 2026-06-24 14:03 UTCEPSS rescore
  51. 2026-06-23 21:31 UTCEPSS rescore
  52. 2026-06-23 21:31 UTCEPSS rescore
  53. 2026-06-22 14:23 UTCEPSS rescore
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  55. 2026-06-21 14:54 UTCEPSS rescore
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  57. 2026-06-21 01:57 UTCEPSS rescore
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  59. 2026-06-19 19:23 UTCEPSS rescore
  60. 2026-06-18 17:50 UTCEPSS rescore
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  68. 2026-06-12 23:10 UTCEPSS rescore
  69. 2026-06-11 13:58 UTCEPSS rescore
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  75. 2026-06-07 15:23 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2020-1104?
CVE-2020-1104 is a medium vulnerability published on May 21, 2020. A spoofing vulnerability exists when Microsoft SharePoint Server does not properly sanitize a specially crafted web request to an affected SharePoint server. An authenticated attacker could exploit the vulnerability by sending a specially crafted request to an affected SharePoint server. The…
When was CVE-2020-1104 disclosed?
CVE-2020-1104 was first published in the National Vulnerability Database on May 21, 2020, with the most recent update on August 19, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2020-1104 actively exploited?
CVE-2020-1104 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2% probability of exploitation in the next 30 days, which ranks it in the top 25.1% of all scored CVEs.
What is the CVSS score of CVE-2020-1104?
CVE-2020-1104 has a CVSS v3 base score of 5.4 (NVD).
How do I remediate CVE-2020-1104?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-1104, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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