CVE-2021-39778

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2022-03-31. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.5Exploit: NoneExposed: 0

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

In Telecomm, there is a possible way to determine whether an app is installed, without query permissions, due to improper input validation. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-12LAndroid ID: A-196406138

CVSS v3
5.5
EG Score
5.5(medium)
EPSS
1.3%
KEV
Not listed

Published

March 30, 2022

Last Modified

November 21, 2024

References (2)

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 31× 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. 2026-07-21 15:22 UTCEPSS rescore
  2. 2026-07-21 15:22 UTCEPSS rescore
  3. 2026-07-20 17:05 UTCEPSS rescore
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  10. 2026-07-13 22:27 UTCEPSS rescore
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  12. 2026-07-12 05:44 UTCEPSS rescore
  13. 2026-07-09 19:07 UTCEPSS rescore
  14. 2026-07-07 13:43 UTCEPSS rescore
  15. 2026-07-05 02:28 UTCEPSS rescore
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  17. 2026-07-04 06:29 UTCEPSS rescore
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  19. 2026-07-02 16:57 UTCEPSS rescore
  20. 2026-07-01 15:04 UTCEPSS rescore
  21. 2026-06-30 23:20 UTCEPSS rescore
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  1. 2026-06-27 03:06 UTCEPSS rescore
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  3. 2026-06-24 14:03 UTCEPSS rescore
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  5. 2026-06-23 21:31 UTCEPSS rescore
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  7. 2026-06-21 14:55 UTCEPSS rescore
  8. 2026-06-21 01:58 UTCEPSS rescore
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  10. 2026-06-18 17:51 UTCEPSS rescore
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  18. 2026-06-13 22:58 UTCEPSS rescore
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  20. 2026-06-12 23:10 UTCEPSS rescore
  21. 2026-06-11 13:58 UTCEPSS rescore
  22. 2026-06-11 13:58 UTCEPSS rescore
  23. 2026-06-10 22:16 UTCEPSS rescore
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  25. 2026-06-10 13:20 UTCEPSS rescore
  26. 2026-06-08 14:15 UTCEPSS rescore
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  28. 2026-06-07 15:23 UTCEPSS rescore
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  30. 2026-06-06 13:46 UTCEPSS rescore
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  32. 2026-06-05 22:45 UTCEPSS rescore
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  37. 2026-06-02 20:11 UTCEPSS rescore
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  39. 2026-06-01 13:50 UTCEPSS rescore
  40. 2026-06-01 13:50 UTCEPSS rescore
  41. 2026-05-31 22:29 UTCEPSS rescore
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  43. 2026-05-31 00:15 UTCEPSS rescore
  44. 2026-05-31 00:15 UTCEPSS rescore
  45. 2026-05-29 13:42 UTCEPSS rescore
  46. 2026-05-28 13:43 UTCEPSS rescore
  47. 2026-05-28 13:43 UTCEPSS rescore
  48. 2026-05-27 13:39 UTCEPSS rescore
  49. 2026-05-27 13:39 UTCEPSS rescore
  50. 2026-05-26 13:42 UTCEPSS rescore
  51. 2026-05-26 13:42 UTCEPSS rescore
  52. 2026-05-26 07:17 UTCEPSS rescore
  53. 2026-05-26 07:17 UTCEPSS rescore
  54. 2026-05-26 07:17 UTCEPSS rescore
  55. 2026-05-26 00:47 UTCEG score recompute
  56. 2026-05-26 00:47 UTCGHSA enrichment

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2021-39778?
CVE-2021-39778 is a medium vulnerability published on March 30, 2022. In Telecomm, there is a possible way to determine whether an app is installed, without query permissions, due to improper input validation. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.Product:…
When was CVE-2021-39778 disclosed?
CVE-2021-39778 was first published in the National Vulnerability Database on March 30, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2021-39778 actively exploited?
CVE-2021-39778 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2021-39778?
CVE-2021-39778 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2021-39778?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-39778, 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.

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