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Fencer Vulns
high 7.5

CVE-2021-0517 json

In updateCapabilities of ConnectivityService.java, there is a possible incorrect network state determination due to a logic error in the co…

published 2021-06-21 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-3136

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 56%
public exploits
0
none known

Summary

In updateCapabilities of ConnectivityService.java, there is a possible incorrect network state determination due to a logic error in the code. This could lead to biasing of networking tasks to occur on non-VPN networks, which could lead to remote information disclosure, with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11Android ID: A-179053823

Patch / fix

Exploit prediction

0.80% chance of exploitation in the next 30 days, higher than 56% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N

Affected products

  • n/a Android

Classification

Weakness
  • CWE-670 Always-Incorrect Control Flow Implementation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.