PatchTheCVECVE-2019-16736: A stack-based buffer overflow in processCommandUploadSnapshot in libcommon.so in Petwant PF-103 firmware 4.22.
CVE-2019-16736 is a critical-severity flaw (CVSS 9.8) affecting petalk ai firmware, pf-103 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
A stack-based buffer overflow in processCommandUploadSnapshot in libcommon.so in Petwant PF-103 firmware 4.22.2.42 and Petalk AI 3.2.2.30 allows remote attackers to cause denial of service or run arbitrary code as the root user.
Why this priority
- Critical severity
- Public exploit reference
- Remotely exploitable, no login, no user action
No fix is published yet: follow the downgrade or mitigation steps.
Risk facts
| CVSS score | 9.8 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 3.4% (top 11%) |
| CISA exploited list | No |
| Weakness | CWE-787 |
| Published | 2019-12-13 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2019-16736?
petalk ai firmware: mitigate or apply the listed mitigation; pf-103 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.
Is CVE-2019-16736 being exploited?
CVE-2019-16736 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2019-16736 affect?
CVE-2019-16736 affects petalk ai firmware, pf-103 firmware. Severity is critical (CVSS 9.8). A stack-based buffer overflow in processCommandUploadSnapshot in libcommon.so in Petwant PF-103 firmware 4.22.2.42 and Petalk AI 3.2.2.30 allows remote attackers to cause denial of service or run arbitrary code as the root user.
How urgent is CVE-2019-16736?
Priority 67/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action
Related CVEs
- CVE-2019-17364 CRITICAL 9.8 MITIGATE MITIGATE The processCommandUploadLog() function of libcommon.so in Petwant PF-103 firmware 4.22.2.42 and Petalk AI 3.2.
- CVE-2019-16737 CRITICAL 9.8 MITIGATE MITIGATE The processCommandSetMac() function of libcommon.so in Petwant PF-103 firmware 4.22.2.42 and Petalk AI 3.2.2.3
- CVE-2019-16735 CRITICAL 9.8 MITIGATE MITIGATE A stack-based buffer overflow in processCommandUploadLog in libcommon.so in Petwant PF-103 firmware 4.22.2.42
- CVE-2019-16734 CRITICAL 9.8 MITIGATE MITIGATE Use of default credentials for the TELNET server in Petwant PF-103 firmware 4.3.2.50 and Petalk AI 3.2.2.30 al
- CVE-2019-16733 CRITICAL 9.8 MITIGATE MITIGATE processCommandSetUid() in libcommon.so in Petwant PF-103 firmware 4.22.2.42 and Petalk AI 3.2.2.30 allows remo