🛡️ CVE-2023-28709 — 7-mode-transition-tool

🟠 CVSS 8.0 — High ✅ No Known Exploit CWE-193 NVD

8.0

CVSS Score

0 Low4 Medium7 High9 Critical10

Description

Apache Tomcat: Fix for CVE-2023-24998 is incomplete

The fix for CVE-2023-24998 was incomplete for Apache Tomcat 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.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack vector: Network — reachable from anywhere that can route to the service.
Attack complexity: Low — the attack works reliably, with no preparation.
Privileges required: None — an unauthenticated stranger can try it.
User interaction: None — nobody has to be tricked into anything.
Scope: Unchanged — the damage stays inside the vulnerable component.
Confidentiality impact: None.
Integrity impact: None.
Availability impact: High — total loss, or loss the attacker controls.

Weakness class

CVE-2023-28709 is classified as CWE-193: Off-by-one Error. A product calculates or uses an incorrect maximum or minimum value that is 1 more, or 1 less, than the correct value.

Affected software

CVE-2023-28709 is recorded against 5 packages.

7-mode-transition-tool
debian-linux
org.apache.tomcat.embed:tomcat-embed-core (from 9.0.71 up to 9.0.74)
org.apache.tomcat:tomcat-coyote (from 8.5.85 up to 8.5.88)
tomcat

Timeline and source

Published on 22 May 2023 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

www.openwall.com
lists.apache.org
security.gentoo.org
security.netapp.com
www.debian.org
www.openwall.com
lists.apache.org
security.gentoo.org
security.netapp.com
www.debian.org

Other advisories for this package

7-mode-transition-tool has other advisories on record. If you are patching this one, these are worth checking on the same host:

CVE-2023-22006 (3.1 Low, published 18 Jul 2023)
CVE-2023-22049 (3.7 Low, published 18 Jul 2023)
CVE-2023-22045 (3.7 Low, published 18 Jul 2023)
CVE-2023-22041 (5.1 Medium, published 18 Jul 2023)
CVE-2023-22036 (3.7 Low, published 18 Jul 2023)
CVE-2023-21937 (3.7 Low, published 18 Apr 2023)
CVE-2023-21930 (7.4 High, published 18 Apr 2023)
CVE-2023-21968 (3.7 Low, published 18 Apr 2023)

Same weakness in other software

These advisories are the same class of weakness (CWE-193: Off-by-one Error) in other software:

CVE-2026-71391 (published 10 Aug 2026)
CVE-2026-14899 (7.5 High, published 22 Jul 2026)
CVE-2026-44687 (3.7 Low, published 22 Jul 2026)
CVE-2026-50497 (6.5 Medium, published 14 Jul 2026)
CVE-2026-58380 (7.3 High, published 6 Jul 2026)
CVE-2026-12413 (7.5 High, published 2 Jul 2026)
CVE-2026-7831 (7.6 High, published 1 Jul 2026)
CVE-2026-44042 (3.7 Low, published 1 Jul 2026)

CVE-2023-28709 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Debian — DEBIAN-CVE-2023-28709 Ubuntu — UBUNTU-CVE-2023-28709

Details

Severity HIGH

CVSS Score 8.0

CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE CWE-193

Public Exploit ✅ No

Source NVD

Published 2023-05-22

Updated 2026-08-20

Modified 2026-06-17

Fix URL N/A

Affected Packages

Software	From version	Fixed in
7-mode-transition-tool	—	—
debian-linux	—	—
org.apache.tomcat:tomcat-coyote	8.5.85	8.5.88
org.apache.tomcat.embed:tomcat-embed-core	9.0.71	9.0.74
tomcat	—	—

References

Mailing List, Third Party Advisory http://www.openwall.com/lists/oss-security/2023/05/22/1

Mailing List, Vendor Advisory https://lists.apache.org/thread/7wvxonzwb7k9hx9jt3q33cmy7j97jo3j

Third Party Advisory https://security.gentoo.org/glsa/202305-37

Third Party Advisory https://security.netapp.com/advisory/ntap-20230616-0004/

Third Party Advisory https://www.debian.org/security/2023/dsa-5521

Mailing List, Third Party Advisory http://www.openwall.com/lists/oss-security/2023/05/22/1

Mailing List, Vendor Advisory https://lists.apache.org/thread/7wvxonzwb7k9hx9jt3q33cmy7j97jo3j

Third Party Advisory https://security.gentoo.org/glsa/202305-37

Third Party Advisory https://security.netapp.com/advisory/ntap-20230616-0004/

Third Party Advisory https://www.debian.org/security/2023/dsa-5521

🔗 NVD 🔗 Mitre

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🛡️ CVE-2023-28709 — 7-mode-transition-tool

Description

How this vulnerability can be exploited

CVSS metrics in full

Weakness class

Affected software

Timeline and source

References

Other advisories for this package

Same weakness in other software

CVE-2023-28709 on other distributions

Is 7-mode-transition-tool part of your stack?

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