CVE-2021-25681

AdTran Personal Phone Manager 10.8.1 software is vulnerable to an issue that allows for exfiltration of data over DNS. This could allow for exposed AdTran Personal Phone Manager web servers to be used as DNS redirectors to tunnel arbitrary data over DNS. NOTE: The affected appliances NetVanta 7060 and NetVanta 7100 are considered End of Life and as such this issue will not be patched

CVSS v3.1

7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS v2.0

5.0 MEDIUMAV:N/AC:L/Au:N/C:P/I:N/A:N

EPSS

10.88% chance of exploitation in the next 30 days, 96th percentile

Published

2021-04-20

Updated

2026-07-09

Proof-of-concept exploits (2)

• http://packetstormsecurity.com/files/162280/Adtran-Personal-Phone-Manager-10.8.1-DNS-Exfi…
• 3ndG4me/AdTran-Personal-Phone-Manager-Vulns/blob/main/CVE-2021-25681.md

ExploitDB entries (1)

• https://www.exploit-db.com/exploits/49787

References

• CVE Record
• NVD entry

Related

• CVE-2017-12617
• CVE-2018-0296
• CVE-2020-3452
• CVE-2020-7934
• CVE-2021-25679
• CVE-2021-25680