CVE-2016-2427

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2022-05-17. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 5.5Exploit: None knownExposed services: Not assessed

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

The AES-GCM specification in RFC 5084, as used in Android 5.x and 6.x, recommends 12 octets for the aes-ICVlen parameter field, which might make it easier for attackers to defeat a cryptographic protection mechanism and discover an authentication key via a crafted application, aka internal bug 26234568. NOTE: The vendor disputes the existence of this potential issue in Android, stating "This CVE was raised in error: it referred to the authentication tag size in GCM, whose default according to ASN.1 encoding (12 bytes) can lead to vulnerabilities. After careful consideration, it was decided that the insecure default value of 12 bytes was a default only for the encoding and not default anywhere else in Android, and hence no vulnerability existed.

CVSS v3
5.5
EG Score
5.5MEDIUMmedium confidence
EG Risk
29
EG Risk 29/100CISA 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
Severity55% × 45%
Exploitation0% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track or Attend at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
0.4%
EPSS %ILE
33rd
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track or Attend at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). 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

April 18, 2016

Last Modified

June 17, 2026

References (2)

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 6× in last 7d / 21× 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 155 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2016-2427?
CVE-2016-2427 is a medium vulnerability published on April 18, 2016. The AES-GCM specification in RFC 5084, as used in Android 5.x and 6.x, recommends 12 octets for the aes-ICVlen parameter field, which might make it easier for attackers to defeat a cryptographic protection mechanism and discover an authentication key via a crafted application, aka internal bug…
When was CVE-2016-2427 disclosed?
CVE-2016-2427 was first published on April 18, 2016, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2016-2427 actively exploited?
CVE-2016-2427 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (33rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2016-2427?
CVE-2016-2427 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2016-2427?
No fix for CVE-2016-2427 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.

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