CVE-2019-8603

HIGHNVD 8.88.8
EchelonGraph scoreMEDIUM confidence

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

This high-severity CVE scores 8.8 under NVD CVSS v3. EPSS exploit probability: 1.2% (67th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, NVD CVSS v3
8.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1.2%CVSS: 8.8Exploit: None knownExposed services: Not assessed

The CVE record names the fixed release — apply it.

A validation issue was addressed with improved input sanitization. This issue is fixed in macOS Mojave 10.14.5. An application may be able to read restricted memory.

CVSS v3
8.8
EG Score
8.8HIGHmedium confidence
EG Risk
40
EG Risk 40/100

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)
Severity88% × 45%
The EG Score, 8.8 of 10.
Exploitation1.2% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's BOD 26-04 default: no one has published Automatable for this CVE, and CISA treats it as “no” for a CVE not in KEV.
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (no CISA value, KEV listing or exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from Vulnrichment. EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: The CVE record names the fixed release. Apply it within your standard update timelines.
EPSS PROB
1.2%
EPSS %ILE
67th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

The CVE record names the fixed release. Apply it within your standard update timelines.

Exploitation none (no CISA value, KEV listing or exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from 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)14 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's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). Where an input reads “CISA's BOD 26-04 default”, no one has published it for this CVE, and CISA's implementation guidance says: “If “Automatable” and “Technical Impact” information items about a CVE ID are not available and the CVE ID is not in the KEV Catalog, CISA will treat its values as “no” and “total,” respectively, until CISA or a third party provides metadata about the CVE ID. CISA will always provide the Vulnrichment data for a CVE ID listed in the KEV Catalog.” 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

December 18, 2019

Last Modified

November 21, 2024

Advisory Details (1)

Auto-updated Aug 11, 2026
Fix named in the CVE record.
Web page

About the security content of macOS Mojave 10.14.5, Security Update 2019-003 High Sierra, Security Update 2019-003 Sierra - Apple Support

https://support.apple.com/HT210119

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 27× 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 88 of 148 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. 12 repeat rows among the latest 100 are merged into the row they repeat. The 60 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-12 00:15 UTCEG score recompute
  2. 2026-10-11 13:42 UTCEPSS rescoreEPSS 1.2% · 67th percentile
  3. 2026-10-10 19:56 UTCEPSS rescoreEPSS 1.2% · 67th percentile
  4. 2026-10-09 20:03 UTCEPSS rescoreEPSS 1.2% · 67th percentile
  5. 2026-10-08 16:37 UTCEPSS rescoreEPSS 1.2% · 67th percentile
  6. 2026-10-07 23:43 UTCEPSS rescoreEPSS 1.2% · 67th percentile
  7. 2026-10-06 15:13 UTCEPSS rescoreEPSS 1.2% · 67th percentile
  8. 2026-10-05 17:39 UTCEPSS rescoreEPSS 1.2% · 67th percentile
  9. 2026-10-04 23:18 UTCEPSS rescoreEPSS 1.2% · 67th percentile
  10. 2026-10-03 14:22 UTCEPSS rescoreEPSS 1.2% · 67th percentile
  11. 2026-09-30 14:59 UTCEPSS rescoreEPSS 1.2% · 67th percentile
  12. 2026-09-30 10:29 UTCEG score recompute
  13. 2026-09-28 13:46 UTCEPSS rescoreEPSS 1.2% · 67th percentile
  14. 2026-09-27 13:40 UTCEPSS rescoreEPSS 1.2% · 67th percentile
  15. 2026-09-26 15:54 UTCEPSS rescoreEPSS 1.2% · 67th percentile
  16. 2026-09-26 00:20 UTCEPSS rescoreEPSS 1.2% · 67th percentile
  17. 2026-09-24 13:59 UTCEPSS rescoreEPSS 1.2% · 67th percentile
  18. 2026-09-22 14:43 UTCEPSS rescoreEPSS 1.2% · 67th percentile
  19. 2026-09-21 20:28 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  20. 2026-09-20 20:11 UTCEPSS rescoreEPSS 1.2% · 67th percentile
  21. 2026-09-19 15:37 UTCEPSS rescoreEPSS 1.2% · 67th percentile
  22. 2026-09-18 19:23 UTCEPSS rescoreEPSS 1.2% · 67th percentile
  23. 2026-09-17 19:22 UTCEPSS rescoreEPSS 1.2% · 67th percentile
  24. 2026-09-16 14:04 UTCEPSS rescoreEPSS 1.2% · 67th percentile
  25. 2026-09-15 03:06 UTCEPSS rescoreEPSS 1.2% · 67th percentile
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  1. 2026-09-13 16:42 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  2. 2026-09-12 14:56 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  3. 2026-09-11 14:48 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  4. 2026-09-11 09:32 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  5. 2026-09-08 21:55 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  6. 2026-09-07 15:57 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  7. 2026-09-06 13:44 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  8. 2026-09-05 15:24 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  9. 2026-09-04 13:56 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  10. 2026-09-02 14:08 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  11. 2026-09-01 03:32 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  12. 2026-08-30 01:18 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  13. 2026-08-27 14:21 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  14. 2026-08-26 14:42 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  15. 2026-08-25 13:45 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  16. 2026-08-19 17:00 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  17. 2026-08-18 13:44 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  18. 2026-08-17 13:43 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  19. 2026-08-15 01:26 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  20. 2026-08-13 21:57 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  21. 2026-08-12 13:47 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  22. 2026-08-09 13:43 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  23. 2026-08-08 16:33 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  24. 2026-08-07 16:23 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  25. 2026-08-05 19:13 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  26. 2026-08-04 15:05 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  27. 2026-08-04 10:34 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  28. 2026-08-03 10:32 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  29. 2026-08-02 02:23 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  30. 2026-08-01 04:12 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  31. 2026-07-30 16:24 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  32. 2026-07-30 01:27 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  33. 2026-07-28 15:32 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  34. 2026-07-26 14:51 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  35. 2026-07-25 14:14 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  36. 2026-07-24 14:14 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  37. 2026-07-23 14:15 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  38. 2026-07-23 01:47 UTCEG score recompute
  39. 2026-07-22 22:29 UTCEG score recompute
  40. 2026-07-22 14:05 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  41. 2026-07-21 15:22 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  42. 2026-07-20 17:04 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  43. 2026-07-19 14:28 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  44. 2026-07-19 02:26 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  45. 2026-07-18 10:02 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  46. 2026-07-16 16:59 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  47. 2026-07-15 16:55 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  48. 2026-07-15 01:57 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  49. 2026-07-13 22:27 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  50. 2026-07-13 06:10 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  51. 2026-07-12 05:43 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  52. 2026-07-11 08:24 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  53. 2026-07-09 19:06 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  54. 2026-07-08 15:11 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  55. 2026-07-07 13:43 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  56. 2026-07-06 16:25 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  57. 2026-07-06 02:20 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  58. 2026-07-05 02:27 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  59. 2026-07-04 06:28 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  60. 2026-07-01 15:03 UTCEPSS rescoreEPSS 1.2% · 64th percentile
  61. 2026-06-30 23:20 UTCEPSS rescoreEPSS 1.2% · 64th percentile
  62. 2026-06-29 14:03 UTCEPSS rescoreEPSS 1.2% · 64th percentile
  63. 2026-06-28 04:54 UTCEPSS rescoreEPSS 1.2% · 64th percentile

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Frequently asked(5)

What is CVE-2019-8603?
CVE-2019-8603 is a high-severity vulnerability; its CVE record was published on December 18, 2019. A validation issue was addressed with improved input sanitization. This issue is fixed in macOS Mojave 10.14.5. An application may be able to read restricted memory.
When was the CVE record for CVE-2019-8603 published?
The CVE record for CVE-2019-8603 was published on December 18, 2019. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of November 21, 2024; the record at its source may have been updated since.
Is CVE-2019-8603 actively exploited?
CVE-2019-8603 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.2% probability of exploitation in the next 30 days (67th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2019-8603?
CVE-2019-8603 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2019-8603?
The CVE record for CVE-2019-8603 names the fix: "This issue is fixed in macOS Mojave 10.14.5."

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