Risk | Medium |
Patch available | YES |
Number of vulnerabilities | 3 |
CVE-ID | CVE-2025-52434 CVE-2025-52520 CVE-2025-53506 |
CWE-ID | CWE-20 CWE-399 CWE-400 |
Exploitation vector | Network |
Public exploit | N/A |
Vulnerable software |
Apache Tomcat Server applications / Web servers |
Vendor | Apache Foundation |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
EUVDB-ID: #VU112274
Risk: Medium
CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2025-52434
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input when handling HTTP/2 requests with APR/Native. A remote attacker can send specially crafted HTTP requests to the server and perform a denial of service (DoS) attack.
MitigationInstall updates from vendor's website.
Vulnerable software versionsApache Tomcat: 9.0.0 - 9.0.106
CPE2.3https://tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.107
https://github.com/apache/tomcat/commit/8a83c3c42d20762782678932c14005cd3397a018
https://lists.apache.org/thread/n7f5v6fzovfxkpqf5q0cztqqn0kjjs4p
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
EUVDB-ID: #VU112275
Risk: Medium
CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2025-52520
CWE-ID:
CWE-399 - Resource Management Errors
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to overflow in file upload limit. A remote attacker can send specially crafted requests to the server and perform a denial of service (DoS) attack.
MitigationInstall updates from vendor's website.
Vulnerable software versionsApache Tomcat: 9.0.0 - 11.0.8
CPE2.3https://tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.107
https://github.com/apache/tomcat/commit/927d66fbc294cb65242102b817a45fd80834e040
https://tomcat.apache.org/security-10.html#Fixed_in_Apache_Tomcat_10.1.43
https://tomcat.apache.org/security-11.html#Fixed_in_Apache_Tomcat_11.0.9
https://lists.apache.org/thread/chm6r12x185lk0o4t50hkvx5zwzszr9p
https://lists.apache.org/thread/mf7zqhz6j66ct0m9sr5902mmqohcrzhs
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
EUVDB-ID: #VU112276
Risk: Medium
CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2025-53506
CWE-ID:
CWE-400 - Resource exhaustion
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to application does not properly control consumption of internal resources when handling excessive HTTP/2 streams. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.
MitigationInstall updates from vendor's website.
Vulnerable software versionsApache Tomcat: 9.0.0 - 11.0.8
CPE2.3https://tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.107
https://github.com/apache/tomcat/commit/434772930f362145516dd60681134e7f0cf8115b
https://tomcat.apache.org/security-10.html#Fixed_in_Apache_Tomcat_10.1.43
https://tomcat.apache.org/security-11.html#Fixed_in_Apache_Tomcat_11.0.9
https://lists.apache.org/thread/tfjqf1odwql63sb40lqpb7dvlffk15t7
https://lists.apache.org/thread/cdfmz3l1blkbgpg9jdn9tg9rlv2bzwj5
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.