CVE-2026-48560

MEDIUMNVD 5.45.4
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

Score 5.4 from GitHub Security Advisory published 2026-06-09. NVD baseline CVSS 5.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
5.4EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 1.1%CVSS: 5.4Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.

CVSS v3
5.4
EG Score
5.4MEDIUMmedium confidence
EG Risk
25
EG Risk 25/100

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 (value × EchelonGraph’s weight)
Severity54% × 45%
The EG Score, 5.4 of 10.
Exploitation1.1% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
1.1%
EPSS %ILE
64th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

June 9, 2026

Last Modified

September 24, 2026

Advisory Details (1)

Auto-updated Jun 16, 2026
Patch available. Sources: microsoft.
MicrosoftMentions a patch (unverified)

Security Update Guide - Microsoft Security Response Center

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-48560

Vendor Advisories for CVE-2026-48560(2)

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

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 32× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 274 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 174 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-12 16:34 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  2. 2026-10-12 16:00 UTCEG score recompute
  3. 2026-10-11 19:43 UTCEG score recompute
  4. 2026-10-11 16:58 UTCEG score recompute
  5. 2026-10-11 14:22 UTCEG score recompute
  6. 2026-10-11 13:49 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  7. 2026-10-10 20:00 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  8. 2026-10-09 20:07 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  9. 2026-10-08 17:12 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  10. 2026-10-07 23:48 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  11. 2026-10-06 15:18 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  12. 2026-10-05 17:43 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  13. 2026-10-04 23:22 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  14. 2026-10-03 14:25 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  15. 2026-10-01 19:50 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  16. 2026-09-30 15:03 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  17. 2026-09-28 13:51 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  18. 2026-09-27 13:48 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  19. 2026-09-26 15:59 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  20. 2026-09-26 00:27 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  21. 2026-09-24 14:07 UTCEG score recompute
  22. 2026-09-24 14:07 UTCVendor advisory
  23. 2026-09-24 14:07 UTCGHSA enrichmentGHSA-3rrj-xq44-843h · GitHub CVSS 5.4
  24. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  25. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.9% · 59th percentile
Show 75 more
  1. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  2. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  3. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  4. 2026-09-14 04:27 UTCEG score recompute
  5. 2026-09-14 04:27 UTCVendor advisory
  6. 2026-09-14 04:27 UTCGHSA enrichmentGHSA-3rrj-xq44-843h · GitHub CVSS 5.4
  7. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  8. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  9. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  10. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  11. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  12. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  13. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  14. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  15. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  16. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  17. 2026-08-31 00:47 UTCEG score recompute
  18. 2026-08-31 00:47 UTCVendor advisory
  19. 2026-08-31 00:47 UTCGHSA enrichmentGHSA-3rrj-xq44-843h · GitHub CVSS 5.4
  20. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  21. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  22. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  23. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  24. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  25. 2026-08-25 23:04 UTCEG score recompute
  26. 2026-08-25 23:04 UTCVendor advisory
  27. 2026-08-25 23:04 UTCGHSA enrichmentGHSA-3rrj-xq44-843h · GitHub CVSS 5.4
  28. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  29. 2026-08-24 15:36 UTCEG score recompute
  30. 2026-08-24 15:36 UTCVendor advisory
  31. 2026-08-24 15:36 UTCGHSA enrichmentGHSA-3rrj-xq44-843h · GitHub CVSS 5.4
  32. 2026-08-23 11:08 UTCEG score recompute
  33. 2026-08-23 11:08 UTCVendor advisory
  34. 2026-08-23 11:08 UTCGHSA enrichmentGHSA-3rrj-xq44-843h · GitHub CVSS 5.4
  35. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  36. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  37. 2026-08-21 10:29 UTCEG score recompute
  38. 2026-08-21 10:29 UTCVendor advisory
  39. 2026-08-21 10:29 UTCGHSA enrichmentGHSA-3rrj-xq44-843h · GitHub CVSS 5.4
  40. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  41. 2026-08-20 08:59 UTCEG score recompute
  42. 2026-08-20 08:59 UTCVendor advisory
  43. 2026-08-20 08:59 UTCGHSA enrichmentGHSA-3rrj-xq44-843h · GitHub CVSS 5.4
  44. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  45. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  46. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  47. 2026-08-17 00:21 UTCEG score recompute
  48. 2026-08-17 00:21 UTCVendor advisory
  49. 2026-08-17 00:21 UTCGHSA enrichmentGHSA-3rrj-xq44-843h · GitHub CVSS 5.4
  50. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  51. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  52. 2026-08-15 18:08 UTCEG score recompute
  53. 2026-08-15 18:08 UTCVendor advisory
  54. 2026-08-15 18:08 UTCGHSA enrichmentGHSA-3rrj-xq44-843h · GitHub CVSS 5.4
  55. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  56. 2026-08-14 16:33 UTCEG score recompute
  57. 2026-08-14 16:33 UTCVendor advisory
  58. 2026-08-14 16:33 UTCGHSA enrichmentGHSA-3rrj-xq44-843h · GitHub CVSS 5.4
  59. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  60. 2026-08-13 20:59 UTCVendor advisory
  61. 2026-08-13 20:59 UTCGHSA enrichmentGHSA-3rrj-xq44-843h · GitHub CVSS 5.4
  62. 2026-08-13 09:09 UTCEG score recompute
  63. 2026-08-13 09:09 UTCVendor advisory
  64. 2026-08-13 09:09 UTCGHSA enrichmentGHSA-3rrj-xq44-843h · GitHub CVSS 5.4
  65. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  66. 2026-08-12 07:39 UTCEG score recompute
  67. 2026-08-12 07:39 UTCVendor advisory
  68. 2026-08-12 07:39 UTCGHSA enrichmentGHSA-3rrj-xq44-843h · GitHub CVSS 5.4
  69. 2026-08-11 05:29 UTCEG score recompute
  70. 2026-08-11 05:29 UTCVendor advisory
  71. 2026-08-11 05:29 UTCGHSA enrichmentGHSA-3rrj-xq44-843h · GitHub CVSS 5.4
  72. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  73. 2026-08-10 04:00 UTCEG score recompute
  74. 2026-08-10 04:00 UTCVendor advisory
  75. 2026-08-10 04:00 UTCGHSA enrichmentGHSA-3rrj-xq44-843h · GitHub CVSS 5.4

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-48560?
CVE-2026-48560 is a medium-severity vulnerability; its CVE record was published on June 9, 2026. Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
When was CVE-2026-48560 made public?
CVE-2026-48560 was made public on June 9, 2026: that is the date its CVE record's CNA, Microsoft Corporation, gives for when the vulnerability was made public. The CVE record itself was published on June 9, 2026. EchelonGraph's copy of the record carries a last-modified date of September 24, 2026; the record at its source may have been updated since.
Is CVE-2026-48560 actively exploited?
CVE-2026-48560 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.1% probability of exploitation in the next 30 days (64th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-48560?
CVE-2026-48560 has a CVSS v3 base score of 5.4 (NVD).
How do I remediate CVE-2026-48560?
A fix for CVE-2026-48560 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-48560 are linked in the Vendor Advisories panel on this page.

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