QOS maintains a small footprint centered on logging and serialization libraries—Reload4j, Logback, and SLF4j—that are deeply embedded across enterprise Java applications and frameworks. Vulnerabilities affecting this vendor skew strongly toward critical severity and recur through high-risk weakness classes including deserialization of untrusted data, improper certificate validation, and SQL injection, reflecting the attack surface inherent to widely linked middleware and logging infrastructure. Current exploitation activity and exposure counts are shown alongside this summary.
The number and severity of CVEs published that impact products developed by Qos over time
Signals from CVEs in this vendor scope (10 CVEs).
10 CVEs · Highest risk first
| CVE | Published | CVSS | Risk | KEV | Exploit |
|---|---|---|---|---|---|
CVE-2022-23305CRITICAL By design, the JDBCAppender in Log4j 1.2.x accepts an SQL statement as a configuration parameter where the values to be inserted are converters from PatternLayout. The message conv | Jan 18, 2022 | 9.8 | 68 | NO | NO |
CVE-2022-23302HIGH JMSSink in all versions of Log4j 1.x is vulnerable to deserialization of untrusted data when the attacker has write access to the Log4j configuration or if the configuration refere | Jan 18, 2022 | 8.8 | 63 | NO | NO |
CVE-2022-23307HIGH CVE-2020-9493 identified a deserialization issue that was present in Apache Chainsaw. Prior to Chainsaw V2.0 Chainsaw was a component of Apache Log4j 1.2.x where the same issue exi | Jan 18, 2022 | 8.8 | 57 | NO | NO |
CVE-2018-8088CRITICAL org.slf4j.ext.EventData in the slf4j-ext module in QOS.CH SLF4J before 1.8.0-beta2 allows remote attackers to bypass intended access restrictions via crafted data. EventData in the | Mar 20, 2018 | 9.8 | 39 | NO | NO |
CVE-2020-9493CRITICAL A deserialization flaw was found in Apache Chainsaw versions prior to 2.1.0 which could lead to malicious code execution. | Jun 16, 2021 | 9.8 | 34 | NO | NO |
CVE-2021-42550MEDIUM In logback version 1.2.7 and prior versions, an attacker with the required privileges to edit configurations files could craft a malicious configuration allowing to execute arbitra | Dec 16, 2021 | 6.6 | 27 | NO | NO |
CVE-2017-5929CRITICAL QOS.ch Logback before 1.2.0 has a serialization vulnerability affecting the SocketServer and ServerSocketReceiver components. | Mar 13, 2017 | 9.8 | 27 | NO | NO |
CVE-2023-6378HIGH A serialization vulnerability in logback receiver component part of
logback version 1.4.11 allows an attacker to mount a Denial-Of-Service
attack by sending poisoned data.
| Nov 29, 2023 | 7.5 | 25 | NO | NO |
CVE-2023-6481HIGH A serialization vulnerability in logback receiver component part of
logback version 1.4.13, 1.3.13 and 1.2.12 allows an attacker to mount a Denial-Of-Service
attack by sending po | Dec 4, 2023 | 7.5 | 24 | NO | NO |
Improper validation of certificate with host mismatch in Apache Log4j SMTP appender. This could allow an SMTPS connection to be intercepted by a man-in-the-middle attack which coul | Apr 27, 2020 | 3.7 | 20 | NO | NO |
Signals from CVEs in this vendor scope (10 CVEs).
An overview of all social media posts that mention a CVE ID that affects a product developed by Qos.
Media articles that mention a CVE ID that affects a product developed by Qos — matched by CVE ID, not by vendor name.