CVE-2026-6676

HIGHPre-NVD 7.87.8—
EchelonGraph scoreHIGH confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-06-13. a secondary CVSS source baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.8Exploit: NoneExposed: 0

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

Heap buffer out-of-bounds write vulnerability in Avira Antivirus engine when scanning a malformed POSIX tar archive may allow Local Execution of Code or Denial-of-Service of the antivirus engine process.

This issue affects Avira Antivirus on Windows, macOS, and Linux for engine builds before 8.3.27.12.

CVSS v3
7.8
EG Score
7.8(high)
EPSS
2.3%
KEV
Not listed

Published

June 12, 2026

Last Modified

June 15, 2026

Advisory Details (1)

Auto-updated Jun 13, 2026
⚠️ Active exploitation confirmed. Patch available.
generic Patch Available🔴 Active Exploitation

Gen™ Security Advisories | Gen™ | Gen™

https://www.gendigital.com/us/en/contact-us/security-advisories/

Vendor Advisories for CVE-2026-6676(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.

Data Freshness Timeline

(refreshed 31× in last 7d / 128× 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 128 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-6676?
CVE-2026-6676 is a high vulnerability published on June 12, 2026. Heap buffer out-of-bounds write vulnerability in Avira Antivirus engine when scanning a malformed POSIX tar archive may allow Local Execution of Code or Denial-of-Service of the antivirus engine process. This issue affects Avira Antivirus on Windows, macOS, and Linux for engine builds before…
When was CVE-2026-6676 disclosed?
CVE-2026-6676 was first published in the National Vulnerability Database on June 12, 2026, with the most recent update on June 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-6676 actively exploited?
CVE-2026-6676 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-6676?
CVE-2026-6676 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-6676?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-6676, 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

Explore the affected products and dependency analysis for CVE-2026-6676

Explore →

Is Your Infrastructure Affected by CVE-2026-6676?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs