Critical severity · published Aug 17, 2026
CVE-2026-19977
EFM ipTIME A3004T Session Validation httpcon_check_session_url improper authentication
10.0
CVSS
1.3%
EPSS
No
On KEV
Description
A vulnerability was detected in EFM ipTIME A3004T 14.19.0. The affected element is the function httpcon_check_session_url of the component Session Validation. Performing a manipulation results in improper authentication. Remote exploitation of the attack is possible. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)1.3% · higher than 71% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
IA
ipTIME A3004T · EFM
14.19.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-19977
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-19977
github.com
https://github.com/AdminSafe/CVE/issues/1
vuldb.com
https://vuldb.com/cve/CVE-2026-19977
vuldb.com
https://vuldb.com/submit/873848
vuldb.com
https://vuldb.com/vuln/391156
vuldb.com
https://vuldb.com/vuln/391156/cti
More from ipTIME A3004T
5.0
CVE-2025-14485
EFM ipTIME A3004T Administrator Password timepro.cgi show_debug_screen command injection