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CVE-2019-16731

21
FAUCET Score

CVE-2019-16731 describes an authentication bypass vulnerability in the udpServerSys service of Petwant PF-103 and Petalk AI devices, specifically firmware versions 4.22.2.42 and 3.2.2.30 respectively. This flaw allows unauthenticated remote attackers to initiate firmware upgrades and modify device settings, impacting the integrity of the affected systems. With a CVSS v3.1 score of 7.5 (HIGH), the vulnerability is easily exploitable over the network without user interaction or authentication. Despite its high severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
3.2.2.30CPE matchmatch criteria
cpe:2.3:o:skymee:petalk_ai_firmware:3.2.2.30:*:*:*:*:*:*:*
4.22.2.42CPE matchmatch criteria
cpe:2.3:o:petwant:pf-103_firmware:4.22.2.42:*:*:*:*:*:*:*

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:N/I:H/A:N

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

Exploit Intelligence

EPSS Score
1.08%
Probability of exploitation in next 30 days
EPSS Percentile
61.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0108 is in the 39th percentile among its peer group of 51,466 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

blog.securityevaluators.com / remotely-exploiting-iot-pet-feeders-21013562aea3
ExploitThird Party Advisory