`CVE-2018-8088` QOS slf4j

Affected software	QOS slf4j
Severity	9.8 Critical CVSS 3.1 2 scores
Fixed in	`1.7.26`, `1.8.0-beta4`
Weakness	Improper access control (CWE-284)
Published	20 Mar 2018
Updated	13 Nov 2026

Description

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 slf4j-ext module in QOS.CH SLF4J, has been fixed in SLF4J versions 1.7.26 later and in the 2.0.x series.

Exploitation status

No public exploit

No exploit has been reported in the sources we check. Published 8 years ago.

CISA KEV not listed
VulnCheck KEV not listed
CISA Vulnrichment no assessment published
Indexed PoC none indexed
EPSS 15% chance in 30 days A model's forecast, not a report of exploitation. Higher than 97% of all scored CVEs.

Waratek protection

Protected by Waratek

Waratek has a rule that blocks attacks on this vulnerability.

Protection full Deserialization, XXE
Action available security rule
Review human ARMR file
Record active

Decided by	An ARMR security-rule template on disk for this CVE
Finding	A shipped ARMR security rule mitigates this CVE: CVE-2018-8088.armr.

Decided by

An ARMR security-rule template on disk for this CVE

Finding

A shipped ARMR security rule mitigates this CVE: CVE-2018-8088.armr.

ARMR rule files

1 file

The rule files Waratek ships for this CVE. Some CVEs need more than one, for example one per affected library or one per ARMR version.

CVE-2018-8088.armr security rule added 2022-09-21 updated 2024-01-30

Waratek research note

written 2026-11-13

Written by a Waratek engineer who reviewed this CVE. Their decision sets the status above, ahead of every automated rule except a withdrawal.

Comments

Rule Name: marshal-deserialize-java-rce, marshal-deserialize-xml-rce,, Deserial sys rule, Deserial, XXE rule

XXE rule only avalable on Agent 22.4.0+. Resideo Technologies is on Secure 16.3.1. So we can give they XXE patches or ask them to upgrade to the latest agent

How to mitigate CVE-2018-8088

Upgrade QOS slf4j to a release that fixes it: 1.7.26 or 1.8.0-beta4. Until you can, Waratek RASP blocks exploitation with its deserialization and XXE rules. It runs inside the Java application, with no code changes.

Waratek RASP Runtime protection for Java applications

CVSS

9.8 CRITICAL v3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H 2 metrics

We show the highest score from the newest CVSS version. Scores from different versions can't be compared, and the first score listed is sometimes a 0.0 placeholder.

Version Score Band Vector Assigner Type

CVSS 3.1 9.8 CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H NVD Primary published

CVSS 2.0 7.5 none AV:N/AC:L/Au:N/C:P/I:P/A:P NVD Primary

Version	Score	Band	Vector	Assigner	Type
CVSS 3.1	9.8	CRITICAL	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`	NVD	Primary	published
CVSS 2.0	7.5	none	`AV:N/AC:L/Au:N/C:P/I:P/A:P`	NVD	Primary

Affected software and releases

Oracle advisories

Advisory	Type	Quarter	Products Oracle names in its risk matrix
Oracle Critical Patch Update October 2021 ↗	CPU	2021-Q4	Oracle Fusion Middleware / Web Services (slf4j-ext) (12.1.3.0.0)
Oracle Critical Patch Update October 2020 ↗	CPU	2020-Q4	Oracle Fusion Middleware / Application Adapters (SLF4J) (12.3.2.1.0)
Oracle Critical Patch Update April 2019 ↗	CPU	2019-Q2	Oracle Utilities Applications / Common (slf4j) (4.2.0.2.0, 4.2.0.3.0, 4.3.0.2.0, 4.3.0.3.0, 4.3.0.4.0, 4.3.0.5.0, 4.3.0.6.0, 4.4.0.0.0)

Advisory

Type

Quarter

Products Oracle names in its risk matrix

Oracle Critical Patch Update October 2021 ↗

CPU

2021-Q4

Oracle Fusion Middleware / Web Services (slf4j-ext) (12.1.3.0.0)

Oracle Critical Patch Update October 2020 ↗

CPU

2020-Q4

Oracle Fusion Middleware / Application Adapters (SLF4J) (12.3.2.1.0)

Oracle Critical Patch Update April 2019 ↗

CPU

2019-Q2

Oracle Utilities Applications / Common (slf4j) (4.2.0.2.0, 4.2.0.3.0, 4.3.0.2.0, 4.3.0.3.0, 4.3.0.4.0, 4.3.0.5.0, 4.3.0.6.0, 4.4.0.0.0)

Oracle components and versions

Family	Component	Versions, as Oracle lists them	Read as
Oracle Fusion Middleware	Application Adapters (SLF4J)	12.3.2.1.0	12.3.2.1.0
Oracle Fusion Middleware	Web Services (slf4j-ext)	12.1.3.0.0	12.1.3.0.0
Oracle Utilities Applications	Common (slf4j)	4.2.0.2.0, 4.2.0.3.0, 4.3.0.2.0, 4.3.0.3.0, 4.3.0.4.0, 4.3.0.5.0, 4.3.0.6.0, 4.4.0.0.0	4.2.0.2.0 · 4.2.0.3.0 · 4.3.0.2.0 · 4.3.0.3.0 · 4.3.0.4.0 · 4.3.0.5.0 · 4.3.0.6.0 · 4.4.0.0.0

Maven packages

Affected and fixed versions, from OSV.dev

Package Introduced Fixed Last affected

org.slf4j:slf4j-ext 0 1.7.26 unbounded

org.slf4j:slf4j-ext 1.8.0-alpha0 1.8.0-beta4 unbounded

Package	Introduced	Fixed	Last affected
`org.slf4j:slf4j-ext`	0	`1.7.26`	unbounded
`org.slf4j:slf4j-ext`	1.8.0-alpha0	`1.8.0-beta4`	unbounded

Products and versions

14 products, 35 version entries

Source	Vendor	Product	Scheme	Affected versions
nvd	oracle	goldengate application adapters	generic	12.3.2.1.0
nvd	oracle	goldengate stream analytics	generic	＜ 19.1.0.0.1
nvd	oracle	utilities framework	generic	4.2.0.2.0 · 4.2.0.3.0 · 4.3.0.2.0 · 4.3.0.3.0 · 4.3.0.4.0 · 4.3.0.5.0 · 4.3.0.6.0 · 4.4.0.0.0
osv	org.slf4j	slf4j-ext	generic	＜ 1.7.26 · ≥ 1.8.0 and ＜ 1.8.0
nvd	qos	slf4j	generic	＜ 1.7.26 · 1.8.0:alpha1 · 1.8.0:alpha2 · 1.8.0:beta1 · 1.8.0:beta2
nvd	redhat	enterprise linux desktop	generic	7.0
nvd	redhat	enterprise linux eus	generic	7.4 · 7.5 · 7.6 · 7.7
nvd	redhat	enterprise linux server	generic	7.0
nvd	redhat	enterprise linux server aus	generic	7.4 · 7.6 · 7.7
nvd	redhat	enterprise linux server tus	generic	7.4 · 7.6 · 7.7
nvd	redhat	enterprise linux workstation	generic	7.0
nvd	redhat	jboss enterprise application platform	generic	6.0.0 · 6.4.0 · 7.1
nvd	redhat	virtualization	generic	4.0
nvd	redhat	virtualization host	generic	4.0

Source

Vendor

Product

Scheme

Affected versions

nvd

oracle

goldengate application adapters

generic

12.3.2.1.0

nvd

oracle

goldengate stream analytics

generic

＜ 19.1.0.0.1

nvd

oracle

utilities framework

generic

4.2.0.2.0 · 4.2.0.3.0 · 4.3.0.2.0 · 4.3.0.3.0 · 4.3.0.4.0 · 4.3.0.5.0 · 4.3.0.6.0 · 4.4.0.0.0

osv

org.slf4j

slf4j-ext

generic

＜ 1.7.26 · ≥ 1.8.0 and ＜ 1.8.0

nvd

qos

slf4j

generic

＜ 1.7.26 · 1.8.0:alpha1 · 1.8.0:alpha2 · 1.8.0:beta1 · 1.8.0:beta2

nvd

redhat

enterprise linux desktop

generic

7.0

nvd

redhat

enterprise linux eus

generic

7.4 · 7.5 · 7.6 · 7.7

nvd

redhat

enterprise linux server

generic

7.0

nvd

redhat

enterprise linux server aus

generic

7.4 · 7.6 · 7.7

nvd

redhat

enterprise linux server tus

generic

7.4 · 7.6 · 7.7

nvd

redhat

enterprise linux workstation

generic

7.0

nvd

redhat

jboss enterprise application platform

generic

6.0.0 · 6.4.0 · 7.1

nvd

redhat

virtualization

generic

4.0

nvd

redhat

virtualization host

generic

4.0

Earlier manual review

A reviewer classified this CVE in an older dataset. We kept the labels and products below, but not the reviewer's reasoning.

## Manual Classification Context **Labels:** HTTP, WEB SERVICES (SLF4J-EXT), APPLICATION ADAPTERS (SLF4J), COMMON (SLF4J), NO AUTH REMOTE EXPLOIT **Products:** ORACLE WEBLOGIC SERVER, ORACLE UTILITIES FRAMEWORK, SLF4J, ORACLE GOLDENGATE APPLICATION ADAPTERS, ORACLE UTILITIES APPLICATIONS, ORACLE FUSION MIDDLEWARE

References

URL	Tags
https://github.com/qos-ch/slf4j/commit/d2b27fba88e983f921558da27fc29b5f5d269405	WEB
https://lists.apache.org/thread.html/rc378b97d52856f9f3c5ced14771fed8357e4187a3a0f9a2f0515931a@%3Cissues.zookeeper.apache.org%3E	WEB
https://lists.apache.org/thread.html/rc378b97d52856f9f3c5ced14771fed8357e4187a3a0f9a2f0515931a%40%3Cissues.zookeeper.apache.org%3E	WEB
https://lists.apache.org/thread.html/raabf1a00b2652575fca9fcb44166a828a0cab97a7d1594001eabc991@%3Ccommon-issues.hadoop.apache.org%3E	WEB
https://lists.apache.org/thread.html/raabf1a00b2652575fca9fcb44166a828a0cab97a7d1594001eabc991%40%3Ccommon-issues.hadoop.apache.org%3E	WEB
https://lists.apache.org/thread.html/r9e25496608036573736cee484d8d03dae400f09e443b0000b6adc042@%3Ccommits.iotdb.apache.org%3E	WEB
https://lists.apache.org/thread.html/r9e25496608036573736cee484d8d03dae400f09e443b0000b6adc042%40%3Ccommits.iotdb.apache.org%3E	WEB
https://lists.apache.org/thread.html/r99a6552e45ca6ba1082031421f51799a4a665eda905ab2c2aa9d6ffa@%3Cdev.flink.apache.org%3E	WEB
https://lists.apache.org/thread.html/r99a6552e45ca6ba1082031421f51799a4a665eda905ab2c2aa9d6ffa%40%3Cdev.flink.apache.org%3E	WEB
https://lists.apache.org/thread.html/r9584c4304c888f651d214341a939bd264ed30c9e3d0d30fe85097ecf@%3Ccommits.pulsar.apache.org%3E	WEB

URL

Timeline

Published	2018-03-20	By the CVE Program.
ARMR remediation created	2022-09-21	Earliest commit adding this CVE's ARMR patch or security rule.
ARMR remediation last updated	2024-01-30	Most recent commit touching this CVE's ARMR patch or security rule.
NVD record modified	2026-06-17	NVD's own last-modified date for this record.
Classification created	2026-11-13	First commit adding this CVE's research note.
Last VRT activity	2026-11-13	Most recent commit touching this CVE's classification, patch or rule file.

Published

2018-03-20

By the CVE Program.

ARMR remediation created

2022-09-21

Earliest commit adding this CVE's ARMR patch or security rule.

ARMR remediation last updated

2024-01-30

Most recent commit touching this CVE's ARMR patch or security rule.

NVD record modified

2026-06-17

NVD's own last-modified date for this record.

Classification created

2026-11-13

First commit adding this CVE's research note.

Last VRT activity

2026-11-13

Most recent commit touching this CVE's classification, patch or rule file.

How VRT decided (3 of 24 rules ran)

3 of 24 rules ran. The rest didn't run because an earlier rule had already settled the CVE.

# Rule Outcome Status Detail

identity: Does this identifier describe a vulnerability at all? the first rule that matches decides

1 rejected no match CVE Program withdrawal of this identifier

scope: Is it a vulnerability Waratek protects? the first rule that matches decides

2 armr-patch-file no match An ARMR patch file on disk for this CVE

3 armr-secure-rule-file decided it matched Protected by Waratek Shipped ARMR security rule exists: CVE-2018-8088.armr

4 manual-classification not reached A researcher's recorded decision for this specific CVE

5 manual classification not reached Manual classification of this CVE in the legacy dataset

6 non-java-upstream not reached A root cause in non-Java code: an OS kernel, a C library, or a bundled runtime

7 oracle-component not reached The defect being in a component of a tracked product the agent does not reach: JavaFX, the Java SE installer, the JInitiator browser plug-in, the native WebLogic proxy plug-in, or a native part of Oracle Application Server or Collaboration Suite (HTTP Server, Web Cache, Internet Directory, mail and calendar servers). Oracle gives these no CPE of their own and names them only in the description.

8 java-client-side not reached Oracle's own risk-matrix note saying the CVE is reached only through untrusted code in the Java sandbox (applets, Web Start) or only through a client installation of Java, so a server running its own trusted code is not exposed

9 osv-maven not reached An OSV.dev record of this CVE affecting a package published to Maven Central. When every such package is one business applications do not use (Minecraft mods and launchers, Fastjson) and no tracked product is named by CPE, it settles the CVE as Outside Waratek scope instead

10 cna-maven-package not reached An affected Maven artifact named by the CNA itself

11 known-cpe-product not reached An NVD CPE naming a product ARMR tracks

12 cna-cpe-product not reached A CPE the CNA published naming a tracked product. Oracle publishes these on advisory day, months before NVD.

13 oracle-advisory-family not reached A tracked product family named in Oracle's own risk matrix. CPE cannot carry a suite name, only a module.

14 cna-named-product not reached A tracked product named in words by the CVE's own CNA, on a record with no CPE yet. Apache and Eclipse publish these on advisory day, before NVD adds CPE data.

15 non-deployable-product not reached The only affected product being a sealed appliance image, where Java runs but no -javaagent can be attached

16 unmatched-product not reached No tracked product matched above, and none present at all

disposition: What do we do about one that is? every rule runs

17 patch-hint not reached A reference pointing at the upstream fix: a commit, a PR, a Red Hat bug

18 open-source-maven not reached The affected package being open source on Maven, so the fix can be read

19 poc-derivable not reached An indexed exploit clearing the evidence bar to reverse-engineer, where there is no source to read

20 no-exploit not reached Nothing to build a rule from yet: no published exploit, no CISA record of exploitation and no source-level change to read

21 secure-rule-match not reached A vulnerability class already blocked by an ARMR security rule

22 exploited-no-fix-or-poc not reached Somebody exploiting this CVE (a CISA or VulnCheck KEV listing, or a CISA verdict of active exploitation), with no fix, source code or PoC to build a rule from

23 below-action-threshold not reached Medium or Low severity, no CISA or VulnCheck KEV listing, no PoC clearing the evidence bar, no CISA verdict, no Oracle advisory

24 no-exploit-published not reached Exploit code for this candidate, published in a reviewed catalogue or a GitHub repository with 5 or more stars, or in use per CISA or VulnCheck; not only a CISA verdict, a forecast, or nothing at all

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