CVE-2026-20458

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-07-01. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: None knownExposed: 0

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

In Modem, there is a possible memory corruption due to a missing bounds check. This could lead to remote escalation of privilege, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: MOLY01402160; Issue ID: MSV-7298.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
38(Track)
EG Risk 38/100SSVC: Track

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
Severity75% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
26%
KEV
Not listed

Published

July 1, 2026

Last Modified

July 2, 2026

Advisory Details (1)

Auto-updated Jul 1, 2026
⚠️ Active exploitation confirmed. No patch confirmed yet.
generic🔴 Active Exploitation

July 2026

https://corp.mediatek.com/product-security-bulletin/July-2026

Vendor Advisories for CVE-2026-20458(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 7× in last 7d / 68× 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 200 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-20458?
CVE-2026-20458 is a high vulnerability published on July 1, 2026. In Modem, there is a possible memory corruption due to a missing bounds check. This could lead to remote escalation of privilege, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is not needed for…
When was CVE-2026-20458 disclosed?
CVE-2026-20458 was first published in the National Vulnerability Database on July 1, 2026, with the most recent update on July 2, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-20458 actively exploited?
CVE-2026-20458 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 74.2% of all scored CVEs.
What is the CVSS score of CVE-2026-20458?
CVE-2026-20458 has a CVSS v3.1 base score of 7.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-20458?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-20458, 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

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