CVE-2025-42599
Qualitia Active! Mail Stack-Based Buffer Overflow - [Actively Exploited]
Description
Active! mail 6 BuildInfo: 6.60.05008561 and earlier contains a stack-based buffer overflow vulnerability. Receiving a specially crafted request created and sent by a remote unauthenticated attacker may lead to arbitrary code execution and/or a denial-of-service (DoS) condition.
INFO
Published Date :
April 18, 2025, 4:15 a.m.
Last Modified :
April 29, 2025, 7:46 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.9
Exploitability Score :
3.9
CISA KEV (Known Exploited Vulnerabilities)
For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild.
Qualitia Active! Mail contains a stack-based buffer overflow vulnerability that allows a remote, unauthenticated attacker to execute arbitrary or trigger a denial-of-service via a specially crafted request.
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
https://www.qualitia.com/jp/news/2025/04/18_1030.html ; https://nvd.nist.gov/vuln/detail/CVE-2025-42599
Public PoC/Exploit Available at Github
CVE-2025-42599 has a 2 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-42599.
| URL | Resource |
|---|---|
| https://jvn.jp/en/jp/JVN22348866/ | Third Party Advisory |
| https://www.qualitia.com/jp/news/2025/04/18_1030.html | Vendor Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
None
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-42599 vulnerability anywhere in the article.
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The Register
Microsoft tries to knife passwords once and for all - at least for consumers
Infosec In Brief Microsoft has decided to push its consumer customers to dump password in favor of passkeys. The software giant announced the move Thursday, May 1, traditionally known as "World Passwo ... Read more
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Help Net Security
Week in review: Critical SAP NetWeaver flaw exploited, RSAC 2025 Conference
Here’s an overview of some of last week’s most interesting news, articles, interviews and videos: RSAC 2025 Conference RSAC 2025 Conference took place at the Moscone Center in San Francisco. Check out ... Read more
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BleepingComputer
CISA tags Broadcom Fabric OS, CommVault flaws as exploited in attacks
The U.S. Cybersecurity & Infrastructure Security Agency (CISA) is warning of Broadcom Brocade Fabric OS, Commvault web servers, and Qualitia Active! Mail clients vulnerabilities that are actively expl ... Read more
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Help Net Security
CISA warns about actively exploited Broadcom, Commvault vulnerabilities
The Cybersecurity and Infrastructure Security Agency (CISA) has added three new flaws to its Known Exploited Vulnerabilities catalog on Monday, affecting Commvault (CVE-2025-3928), Active! Mail (CVE-2 ... Read more
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TheCyberThrone
CISA Adds ThreeVulnerabilities to KEV Catalog
The Cybersecurity and Infrastructure Security Agency (CISA) has updated its Known Exploited Vulnerabilities (KEV) Catalog with new additions, highlighting active exploitation of critical vulnerabiliti ... Read more
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The Hacker News
Hackers Exploit Critical Craft CMS Flaws; Hundreds of Servers Likely Compromised
Web Application Security / Vulnerability Threat actors have been observed exploiting two newly disclosed critical security flaws in Craft CMS in zero-day attacks to breach servers and gain unauthorize ... Read more
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BleepingComputer
Active! Mail RCE flaw exploited in attacks on Japanese orgs
An Active! Mail zero-day remote code execution vulnerability is actively exploited in attacks on large organizations in Japan. Active! mail is a web-based email client developed initially by TransWARE ... Read more
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Daily CyberSecurity
Larva-24005: Kimsuky’s Global Cyber Espionage Campaign Exploits RDP and Office Flaws
A new cybersecurity report from the AhnLab Security intelligence Center (ASEC) has shed light on a recently identified operation linked to the notorious Kimsuky group. Dubbed “Larva-24005,” this campa ... Read more
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Daily CyberSecurity
CVE-2025-42599: Critical Buffer Overflow in Active! mail Exploited in the Wild
A severe security vulnerability has been identified in Active! mail, a product of QUALITIA CO., LTD., posing a significant risk to affected systems. The Japan Computer Emergency Response Team (JPCERT) ... Read more
The following table lists the changes that have been made to the
CVE-2025-42599 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Initial Analysis by [email protected]
Apr. 29, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CPE Configuration OR *cpe:2.3:a:qualitia:active!_mail:*:*:*:*:*:*:*:* versions up to (excluding) 6.60.05008562 Added Reference Type JPCERT/CC: https://jvn.jp/en/jp/JVN22348866/ Types: Third Party Advisory Added Reference Type JPCERT/CC: https://www.qualitia.com/jp/news/2025/04/18_1030.html Types: Vendor Advisory -
CVE CISA KEV Update by 9119a7d8-5eab-497f-8521-727c672e3725
Apr. 29, 2025
Action Type Old Value New Value Added Date Added 2025-04-28 Added Due Date 2025-05-19 Added Required Action Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. Added Vulnerability Name Qualitia Active! Mail Stack-Based Buffer Overflow Vulnerability -
New CVE Received by [email protected]
Apr. 18, 2025
Action Type Old Value New Value Added Description Active! mail 6 BuildInfo: 6.60.05008561 and earlier contains a stack-based buffer overflow vulnerability. Receiving a specially crafted request created and sent by a remote unauthenticated attacker may lead to arbitrary code execution and/or a denial-of-service (DoS) condition. Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-121 Added Reference https://jvn.jp/en/jp/JVN22348866/ Added Reference https://www.qualitia.com/jp/news/2025/04/18_1030.html
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-42599 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-42599
weaknesses.