CVE-2026-21071

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory published 2026-08-10. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
7.8EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 7.8Exploit: None knownExposed services: Not assessed

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

Improper input validation in MPEG4 codec in libsavsvc.so prior to SMR Aug-2026 Release 1 allows local attackers to write out-of-bounds memory.

CVSS v3
7.8
EG Score
7.8HIGHmedium confidence
EG Risk
35
EG Risk 35/100CISA SSVC

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
Severity78% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.2%
EPSS %ILE
4th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 10, 2026

Last Modified

August 19, 2026

Advisory Details (1)

Auto-updated Aug 10, 2026
No patch confirmed yet.
generic

Samsung Mobile Security

https://security.samsungmobile.com/securityUpdate.smsb?year=2026&month=08

Vendor Advisories for CVE-2026-21071(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 17× in last 7d / 80× 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 165 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-21071?
CVE-2026-21071 is a high vulnerability published on August 10, 2026. Improper input validation in MPEG4 codec in libsavsvc.so prior to SMR Aug-2026 Release 1 allows local attackers to write out-of-bounds memory.
When was CVE-2026-21071 disclosed?
CVE-2026-21071 was first published on August 10, 2026, with the most recent update on August 19, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-21071 actively exploited?
CVE-2026-21071 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (4th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-21071?
CVE-2026-21071 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-21071?
No fix for CVE-2026-21071 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-21071 are linked in the Vendor Advisories panel on this page.

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