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: 41%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
98.5%
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 81× in last 7d / 369× 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 524 total refreshes for this CVE.

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

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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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