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CVE-2017-8226: Amcrest IPM-721S V2.420.AC00.16.R.20160909 devices have default credentials that are hardcoded in the firmw...

Amcrest IPM-721S V2.420.AC00.16.R.20160909 devices have default credentials that are hardcoded in the firmware and can be extracted by anyone who reverses the firmware to identify them. If the firmware version V2.420.AC00.16.R 9/9/2016 is dissected using binwalk tool, one obtains a _user-x.squashfs.img.extracted archive which contains the filesystem set up on the device that many of the binaries in the /usr folder. The binary "sonia" is the one that has the vulnerable function that sets up the default credentials on the device. If one opens this binary in IDA-pro, one will notice that this follows a ARM little endian format. The function sub_3DB2FC in IDA pro is identified to be setting up the values at address 0x003DB5A6. The sub_5C057C then sets this value and adds it to the Configuration files in /mnt/mtd/Config/Account1 file.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysis

Security readout for executives and security teams

A specific Amcrest IP camera firmware reportedly contains default credentials embedded in the firmware. Anyone able to analyze that firmware could recover them and potentially use them against devices still using that version. The sources do not provide CVSS, a confirmed patch, or evidence of active exploitation. Exposure is most likely where Amcrest IPM-721S cameras run firmware V2.420.AC00.16.R.20160909, especially if management access is reachable from untrusted networks. The bundle does not prove other models or firmware versions are affected. Prioritize discovery and containment if these cameras are used in security, operations, or public-facing networks. The business risk is unauthorized camera access through embedded credentials, but urgency depends on whether affected firmware is present and reachable. Mitigation focus: Inventory Amcrest IPM-721S cameras and record exact firmware versions.; Check Amcrest/vendor guidance for fixed firmware, configuration changes, or replacement advice.; Remove internet exposure from camera management interfaces..

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Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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3Source links

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