CVE-2021-43405
CVE-2021-43405
Vexday Risk Score
35Attention
SSVC decision (CISA)
Attend
PoC available → attend closely
Exploit maturity
Proof of concept
Public proof of concept exists, but not yet automated.
CVSS —EPSS 35.6%KEV nãoPoC públicaNuclei —Metasploit —Patch —
Lifecycle
05 Nov 2021Published on NVD
08 Nov 2021Public PoC
Weaponization speed
2 daysto first PoC
Weaponized quickly — attackers prioritized this vulnerability. Patch urgently.
Recommendation: Plan a near-term fix — a public PoC already exists.
An issue was discovered in FusionPBX before 4.5.30. The fax_extension may have risky characters (it is not constrained to be numeric).
Affected products
n/a · n/apublic PoCs found — 2
cve_referencepacketstormsecurity.com/files/164795/FusionPBX-4.5.29-Remote-Code-Execution.htmlunverifiedexploitdbwww.exploit-db.com/exploits/50505unverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.