CVE-2018-4990

HIGHNVD 8.89.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2022-06-08), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 8.8 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 4 sources updated this weekExploited in the wild
8.8
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS: 36%CVSS: 8.8Exploit: NoneExposed: 0

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

Adobe Acrobat and Reader versions 2018.011.20038 and earlier, 2017.011.30079 and earlier, and 2015.006.30417 and earlier have a Double Free vulnerability. Successful exploitation could lead to arbitrary code execution in the context of the current user.

CVSS v3
8.8
EG Score
9.0(high)
EPSS
98.3%
KEV
⚠ Exploited

Published

July 9, 2018

Last Modified

October 23, 2025

Advisory Details (3)

Auto-updated Jun 1, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: cisa.
cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-4990
generic
http://www.securitytracker.com/id/1040920
generic
http://www.securityfocus.com/bid/104167

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 53× in last 7d / 212× 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 385 total refreshes for this CVE.

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

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Frequently asked(6)

What is CVE-2018-4990?
CVE-2018-4990 is a high vulnerability published on July 9, 2018. Adobe Acrobat and Reader versions 2018.011.20038 and earlier, 2017.011.30079 and earlier, and 2015.006.30417 and earlier have a Double Free vulnerability. Successful exploitation could lead to arbitrary code execution in the context of the current user.
When was CVE-2018-4990 disclosed?
CVE-2018-4990 was first published in the National Vulnerability Database on July 9, 2018, with the most recent update on October 23, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2018-4990 actively exploited?
Yes. CISA added CVE-2018-4990 to the Known Exploited Vulnerabilities catalog on June 8, 2022, affecting Adobe Acrobat and Reader. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2018-4990?
CVE-2018-4990 has a CVSS v3 base score of 8.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2018-4990?
CVE-2018-4990 affects Adobe Acrobat and Reader. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2018-4990?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-4990, 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.

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