CVE-2026-20479

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-03. 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 out of bounds read due to a missing bounds check. This could lead to remote denial of service, 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: MOLY00741071; Issue ID: MSV-7620.

CVSS v3
7.5
EG Score
7.5(high)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
41%
KEV
Not listed

Published

August 3, 2026

Last Modified

August 19, 2026

Advisory Details (1)

Auto-updated Aug 3, 2026
⚠️ Active exploitation confirmed. No patch confirmed yet.
generic🔴 Active Exploitation

August 2026 MediaTek Security Bulletin

https://www.mediatek.com/product-security-bulletin/August-2026

Vendor Advisories for CVE-2026-20479(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 27× in last 7d / 75× 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.

  1. 2026-08-20 22:55 UTCEPSS rescore
  2. 2026-08-20 18:28 UTCGHSA enrichment
  3. 2026-08-20 05:58 UTCGHSA enrichment
  4. 2026-08-19 17:27 UTCEG score recompute
  5. 2026-08-19 17:27 UTCGHSA enrichment
  6. 2026-08-19 17:03 UTCEPSS rescore
  7. 2026-08-19 16:00 UTCGHSA enrichment
  8. 2026-08-19 03:28 UTCGHSA enrichment
  9. 2026-08-18 14:56 UTCEG score recompute
  10. 2026-08-18 14:56 UTCGHSA enrichment
  11. 2026-08-18 13:48 UTCEPSS rescore
  12. 2026-08-18 10:40 UTCGHSA enrichment
  13. 2026-08-17 22:08 UTCEG score recompute
  14. 2026-08-17 22:08 UTCGHSA enrichment
  15. 2026-08-17 13:47 UTCEPSS rescore
  16. 2026-08-17 09:35 UTCGHSA enrichment
  17. 2026-08-16 21:05 UTCEG score recompute
  18. 2026-08-16 21:05 UTCGHSA enrichment
  19. 2026-08-16 14:56 UTCEPSS rescore
  20. 2026-08-16 08:34 UTCEG score recompute
  21. 2026-08-16 08:34 UTCGHSA enrichment
  22. 2026-08-16 02:14 UTCEPSS rescore
  23. 2026-08-15 20:04 UTCGHSA enrichment
  24. 2026-08-15 07:33 UTCEG score recompute
  25. 2026-08-15 07:33 UTCGHSA enrichment
Show 50 more
  1. 2026-08-15 01:30 UTCEPSS rescore
  2. 2026-08-14 19:02 UTCGHSA enrichment
  3. 2026-08-14 06:32 UTCEG score recompute
  4. 2026-08-14 06:32 UTCGHSA enrichment
  5. 2026-08-13 22:00 UTCEPSS rescore
  6. 2026-08-13 18:01 UTCGHSA enrichment
  7. 2026-08-13 05:30 UTCGHSA enrichment
  8. 2026-08-12 17:00 UTCEG score recompute
  9. 2026-08-12 17:00 UTCGHSA enrichment
  10. 2026-08-12 13:50 UTCEPSS rescore
  11. 2026-08-12 04:29 UTCGHSA enrichment
  12. 2026-08-11 15:58 UTCEG score recompute
  13. 2026-08-11 15:58 UTCGHSA enrichment
  14. 2026-08-11 13:42 UTCEPSS rescore
  15. 2026-08-11 03:27 UTCEG score recompute
  16. 2026-08-11 03:27 UTCGHSA enrichment
  17. 2026-08-11 00:00 UTCEPSS rescore
  18. 2026-08-10 14:57 UTCGHSA enrichment
  19. 2026-08-10 02:27 UTCGHSA enrichment
  20. 2026-08-09 13:56 UTCEG score recompute
  21. 2026-08-09 13:56 UTCGHSA enrichment
  22. 2026-08-09 13:46 UTCEPSS rescore
  23. 2026-08-09 01:26 UTCEG score recompute
  24. 2026-08-09 01:26 UTCGHSA enrichment
  25. 2026-08-08 16:37 UTCEPSS rescore
  26. 2026-08-08 12:56 UTCGHSA enrichment
  27. 2026-08-08 00:25 UTCEG score recompute
  28. 2026-08-08 00:25 UTCGHSA enrichment
  29. 2026-08-07 11:54 UTCGHSA enrichment
  30. 2026-08-06 23:23 UTCEG score recompute
  31. 2026-08-06 23:23 UTCGHSA enrichment
  32. 2026-08-06 13:46 UTCEPSS rescore
  33. 2026-08-06 10:53 UTCGHSA enrichment
  34. 2026-08-05 22:22 UTCEG score recompute
  35. 2026-08-05 22:22 UTCGHSA enrichment
  36. 2026-08-05 19:17 UTCEPSS rescore
  37. 2026-08-05 09:52 UTCGHSA enrichment
  38. 2026-08-04 21:21 UTCEG score recompute
  39. 2026-08-04 21:21 UTCGHSA enrichment
  40. 2026-08-04 15:10 UTCEPSS rescore
  41. 2026-08-04 10:38 UTCEPSS rescore
  42. 2026-08-04 08:51 UTCEG score recompute
  43. 2026-08-04 08:50 UTCGHSA enrichment
  44. 2026-08-03 20:20 UTCGHSA enrichment
  45. 2026-08-03 19:38 UTCEG score recompute▲ 7.50
  46. 2026-08-03 19:38 UTCGHSA enrichment
  47. 2026-08-03 19:38 UTCMITRE cvelistV5CVSS v3 → 7.5 · severity → HIGH
  48. 2026-08-03 03:23 UTCNVD update
  49. 2026-08-03 02:44 UTCEG score recompute
  50. 2026-08-03 02:43 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-20479?
CVE-2026-20479 is a high vulnerability published on August 3, 2026. In Modem, there is a possible out of bounds read due to a missing bounds check. This could lead to remote denial of service, 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.…
When was CVE-2026-20479 disclosed?
CVE-2026-20479 was first published in the National Vulnerability Database on August 3, 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-2026-20479 actively exploited?
CVE-2026-20479 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 59.3% of all scored CVEs.
What is the CVSS score of CVE-2026-20479?
CVE-2026-20479 has a CVSS v3.1 base score of 7.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-20479?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-20479, 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-2026-20479

Explore →

Is Your Infrastructure Affected by CVE-2026-20479?

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

Start Free Scan →Browse All CVEs