HOMEVULNERABILITIESCVE-2023-28709
HIGH

CVE-2023-28709

CWE-193Published: May 22, 2023· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official Description

The fix for CVE-2023-24998 was incomplete for Apache Tomcat 11.0.0-M2 to 11.0.0-M4, 10.1.5 to 10.1.7, 9.0.71 to 9.0.73 and 8.5.85 to 8.5.87. If non-default HTTP connector settings were used such that the maxParameterCount could be reached using query string parameters and a request was submitted that supplied exactly maxParameterCount parameters in the query string, the limit for uploaded request parts could be bypassed with the potential for a denial of service to occur.

NVD Source

Technical Analysis

CVE-2023-28709 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

Apache1 product(s)
tomcat
Debian1 product(s)
debian linux
netapp1 product(s)
7-mode transition tool
Source: NVD CPE · 4 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttp://www.openwall.com/lists/oss-security/2023/05/22/1
ADVISORYhttps://lists.apache.org/thread/7wvxonzwb7k9hx9jt3q33cmy7j97jo3j
ADVISORYhttps://security.gentoo.org/glsa/202305-37
ADVISORYhttps://security.netapp.com/advisory/ntap-20230616-0004/
ADVISORYhttps://www.debian.org/security/2023/dsa-5521
ADVISORYhttp://www.openwall.com/lists/oss-security/2023/05/22/1
ADVISORYhttps://lists.apache.org/thread/7wvxonzwb7k9hx9jt3q33cmy7j97jo3j
ADVISORYhttps://security.gentoo.org/glsa/202305-37
ADVISORYhttps://security.netapp.com/advisory/ntap-20230616-0004/
ADVISORYhttps://www.debian.org/security/2023/dsa-5521

All References (10)

→
http://www.openwall.com/lists/oss-security/2023/05/22/1Mailing List · Third Party Advisory
→
https://lists.apache.org/thread/7wvxonzwb7k9hx9jt3q33cmy7j97jo3jMailing List · Vendor Advisory
→
https://security.gentoo.org/glsa/202305-37Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20230616-0004/Third Party Advisory
→
https://www.debian.org/security/2023/dsa-5521Third Party Advisory
→
http://www.openwall.com/lists/oss-security/2023/05/22/1Mailing List · Third Party Advisory
→
https://lists.apache.org/thread/7wvxonzwb7k9hx9jt3q33cmy7j97jo3jMailing List · Vendor Advisory
→
https://security.gentoo.org/glsa/202305-37Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20230616-0004/Third Party Advisory
→
https://www.debian.org/security/2023/dsa-5521Third Party Advisory

Quick Facts

CVE IDCVE-2023-28709
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-193
CISA KEVNo
Affected3 vendor(s)
PublishedMay 22, 2023

Related CVEs (CWE-193)

CVE-2024-10442
10.0
CVE-2025-54349
10.0
CVE-2020-14510
9.8
CVE-2004-0005
9.8
CVE-2019-8268
9.8
CVE-2019-8272
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2023-28709 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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