High severity · published May 28, 2024
CVE-2023-30305
An issue discovered in Linksys E5600 routers allows attackers to hijack TCP sessions which could lead to a denial of service
7.5
CVSS
0.4%
EPSS
No
On KEV
Description
An issue discovered in Linksys E5600 routers allows attackers to hijack TCP sessions which could lead to a denial of service.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 36% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EF
E5600 Firmware · Linksys
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-30305
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-30305
Technical Description
https://www.ndss-symposium.org/ndss-paper/exploiting-sequence-number-leakage-tcp-hijacking-in-nat-enabled-wi-fi-networks/
More from E5600 Firmware
9.8
CVE-2025-29229
linksys E5600 V1.1.0.26 is vulnerable to command injection in the function ddnsStatus
9.8
CVE-2025-29228
Linksys E5600 V1.1.0.26 is vulnerable to command injection in the runtime.macClone function via the mc.ip parameter
9.8
CVE-2025-45491
Linksys E5600 v1.1.0.26 was discovered to contain a command injection vulnerability in the runtime.ddnsStatus DynDNS function via the username parameter
9.8
CVE-2025-45490
Linksys E5600 v1.1.0.26 was discovered to contain a command injection vulnerability in the runtime.ddnsStatus DynDNS function via the password parameter
9.8
CVE-2025-45489
Linksys E5600 v1.1.0.26 was discovered to contain a command injection vulnerability in the runtime.ddnsStatus DynDNS function via the hostname parameter