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CVE-2021-25681

42
FAUCET Score

CVE-2021-25681 describes a data exfiltration vulnerability in AdTran Personal Phone Manager 10.8.1, affecting NetVanta 7060 and 7100 appliances. This allows attackers to use exposed web servers as DNS redirectors to tunnel arbitrary data over DNS. With a CVSS score of 7.5 (HIGH), this vulnerability is easily exploitable over the network with low attack complexity, potentially leading to significant data confidentiality impact. While not actively exploited in the wild, a public exploit (EDB-49787) exists, though there is minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
10.8.1CPE matchmatch criteria
cpe:2.3:a:adtran:personal_phone_manager:10.8.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
10.79%
Probability of exploitation in next 30 days
EPSS Percentile
95.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-49787 · Apr 21, 2021
This CVE's current EPSS score of 0.1079 is in the 93rd percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

packetstormsecurity.com / files/162280/Adtran-Personal-Phone-Manager-10.8.1-DNS-Exfiltration.html
ExploitThird Party AdvisoryVDB Entry
github.com / 3ndG4me/AdTran-Personal-Phone-Manager-Vulns/blob/main/CVE-2021-25681.md
ExploitThird Party Advisory