`CVE-2022-23181` Apache Tomcat

Affected software	Apache Tomcat
Severity	7.0 High CVSS 3.1 2 scores
Fixed in	`10.0.16`, `9.0.58`, `8.5.75`
Weakness	CWE-367
Published	27 Jan 2022
Updated	1 Oct 2026

Description

The fix for bug CVE-2020-9484 introduced a time of check, time of use vulnerability into Apache Tomcat 10.1.0-M1 to 10.1.0-M8, 10.0.0-M5 to 10.0.14, 9.0.35 to 9.0.56 and 8.5.55 to 8.5.73 that allowed a local attacker to perform actions with the privileges of the user that the Tomcat process is using. This issue is only exploitable when Tomcat is configured to persist sessions using the FileStore.

Exploitation status

No public exploit

No exploit has been reported in the sources we check. Published 4 years ago.

CISA KEV not listed
VulnCheck KEV not listed
CISA Vulnrichment no assessment published
Indexed PoC none indexed
EPSS 0.69% chance in 30 days

Waratek protection

Protected by Waratek

Waratek has a rule that blocks attacks on this vulnerability.

Protection full Deserialization, Process
Action available security rule
Review human Researcher
Record active

Decided by	A researcher's recorded decision for this specific CVE
Finding	A researcher found this CVE protected by the Marshal RCE rule, ARMR Process rule.

Decided by

A researcher's recorded decision for this specific CVE

Finding

A researcher found this CVE protected by the Marshal RCE rule, ARMR Process rule.

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 RCE rule, ARMR Process rule

Race in the FileStore session path check lets a local attacker get Tomcat to load a session file they control; Marshal deserialize(java)+rce() intercepts ObjectInputStream.readObject(), and the Process rule (with /bin/* and /usr/* listed) blocks the gadget's Runtime.exec. Using the same race to delete other files is not stopped.

How to mitigate CVE-2022-23181

Upgrade Apache Tomcat to a release that fixes it: 10.0.16, 9.0.58 or 8.5.75. Until you can, Waratek RASP blocks exploitation with its deserialization and process rules. It runs inside the Java application, with no code changes.

Waratek RASP Runtime protection for Java applications

CVSS

7.0 HIGH v3.1 CVSS:3.1/AV:L/AC:H/PR:L/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 7.0 HIGH CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H NVD Primary published

CVSS 2.0 3.7 none AV:L/AC:H/Au:N/C:P/I:P/A:P NVD Primary

Version	Score	Band	Vector	Assigner	Type
CVSS 3.1	7.0	HIGH	`CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H`	NVD	Primary	published
CVSS 2.0	3.7	none	`AV:L/AC:H/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 2026 ↗	CPU	2026-Q4	Oracle Communications / Microservices (Apache Tomcat) (7.0.0)
Oracle Critical Patch Update April 2023 ↗	CPU	2023-Q2	Oracle Retail Applications / Xenvironment (Apache Tomcat) (17.0.6, 18.0.5, 19.0.4, 20.0.3, 21.0.2)
Oracle Critical Patch Update October 2022 ↗	CPU	2022-Q4	Oracle Communications Applications / Installation (Apache Tomcat) (10.0.1.6.0) Oracle Financial Services Applications / Installer & Configuration (Apache Tomcat) (8.0.8.0, 8.1.0.0, 8.1.1.0)
Oracle Critical Patch Update July 2022 ↗	CPU	2022-Q3	Oracle Financial Services Applications / Studio (Apache Tomcat) (8.0.8.2.0, 8.0.8.3.0)
Oracle Critical Patch Update April 2022 ↗	CPU	2022-Q2	Oracle Communications / Policy (Apache Tomcat) (1.15.0) Oracle MySQL / Monitoring: General (Apache Tomcat) (8.0.29 and prior)

Advisory

Type

Quarter

Products Oracle names in its risk matrix

Oracle Critical Patch Update October 2026 ↗

CPU

2026-Q4

Oracle Communications / Microservices (Apache Tomcat) (7.0.0)

Oracle Critical Patch Update April 2023 ↗

CPU

2023-Q2

Oracle Retail Applications / Xenvironment (Apache Tomcat) (17.0.6, 18.0.5, 19.0.4, 20.0.3, 21.0.2)

Oracle Critical Patch Update October 2022 ↗

CPU

2022-Q4

Oracle Communications Applications / Installation (Apache Tomcat) (10.0.1.6.0)
Oracle Financial Services Applications / Installer & Configuration (Apache Tomcat) (8.0.8.0, 8.1.0.0, 8.1.1.0)

Oracle Critical Patch Update July 2022 ↗

CPU

2022-Q3

Oracle Financial Services Applications / Studio (Apache Tomcat) (8.0.8.2.0, 8.0.8.3.0)

Oracle Critical Patch Update April 2022 ↗

CPU

2022-Q2

Oracle Communications / Policy (Apache Tomcat) (1.15.0)
Oracle MySQL / Monitoring: General (Apache Tomcat) (8.0.29 and prior)

Oracle components and versions

Family	Component	Versions, as Oracle lists them	Read as
Oracle Communications	Microservices (Apache Tomcat)	7.0.0	7.0.0
Oracle Communications	Policy (Apache Tomcat)	1.15.0	1.15.0
Oracle Communications Applications	Installation (Apache Tomcat)	10.0.1.6.0	10.0.1.6.0
Oracle Financial Services Applications	Installer & Configuration (Apache Tomcat)	8.0.8.0, 8.1.0.0, 8.1.1.0	8.0.8.0 · 8.1.0.0 · 8.1.1.0
Oracle Financial Services Applications	Studio (Apache Tomcat)	8.0.8.2.0, 8.0.8.3.0	8.0.8.2.0 · 8.0.8.3.0
Oracle MySQL	Monitoring: General (Apache Tomcat)	8.0.29 and prior
Oracle Retail Applications	Xenvironment (Apache Tomcat)	17.0.6, 18.0.5, 19.0.4, 20.0.3, 21.0.2	17.0.6 · 18.0.5 · 19.0.4 · 20.0.3 · 21.0.2

Family

Component

Versions, as Oracle lists them

Read as

Oracle Communications

Microservices (Apache Tomcat)

7.0.0

Oracle Communications

Policy (Apache Tomcat)

1.15.0

Oracle Communications Applications

Installation (Apache Tomcat)

10.0.1.6.0

Oracle Financial Services Applications

Installer & Configuration (Apache Tomcat)

8.0.8.0, 8.1.0.0, 8.1.1.0

8.0.8.0 · 8.1.0.0 · 8.1.1.0

Oracle Financial Services Applications

Studio (Apache Tomcat)

8.0.8.2.0, 8.0.8.3.0

8.0.8.2.0 · 8.0.8.3.0

Oracle MySQL

Monitoring: General (Apache Tomcat)

8.0.29 and prior

Oracle Retail Applications

Xenvironment (Apache Tomcat)

17.0.6, 18.0.5, 19.0.4, 20.0.3, 21.0.2

17.0.6 · 18.0.5 · 19.0.4 · 20.0.3 · 21.0.2

Maven packages

Affected and fixed versions, from OSV.dev

Package Introduced Fixed Last affected

org.apache.tomcat:tomcat 10.0.0 10.0.16 unbounded

org.apache.tomcat:tomcat 9.0.0 9.0.58 unbounded

org.apache.tomcat:tomcat 0 8.5.75 unbounded

Package	Introduced	Fixed	Last affected
`org.apache.tomcat:tomcat`	10.0.0	`10.0.16`	unbounded
`org.apache.tomcat:tomcat`	9.0.0	`9.0.58`	unbounded
`org.apache.tomcat:tomcat`	0	`8.5.75`	unbounded

Products and versions

8 products, 29 version entries

Source	Vendor	Product	Scheme	Affected versions
nvd	apache	tomcat	generic	≥ 8.5.55 and ≤ 8.5.73 · ≥ 9.0.35 and ≤ 9.0.56 · 10.0.0:milestone10 · 10.0.0:milestone5 · 10.0.0:milestone6 · 10.0.0:milestone7 · 10.0.0:milestone8 · 10.0.0:milestone9 · ≥ 10.0.1 and ≤ 10.0.14 · 10.1.0:milestone1 · 10.1.0:milestone2 · 10.1.0:milestone3 · 10.1.0:milestone4 · 10.1.0:milestone5 · 10.1.0:milestone6 · 10.1.0:milestone7 · 10.1.0:milestone8
nvd	debian	debian linux	generic	10.0 · 11.0
nvd	oracle	agile engineering data management	generic	6.2.1.0
nvd	oracle	communications cloud native core policy	generic	1.15.0
nvd	oracle	financial services crime and compliance management studio	generic	8.0.8.2.0 · 8.0.8.3.0
nvd	oracle	managed file transfer	generic	12.2.1.3.0 · 12.2.1.4.0
nvd	oracle	mysql enterprise monitor	generic	≤ 8.0.29
osv	org.apache.tomcat	tomcat	generic	＜ 8.5.75 · ≥ 9.0.0 and ＜ 9.0.58 · ≥ 10.0.0 and ＜ 10.0.16

Source

Vendor

Product

Scheme

Affected versions

nvd

apache

tomcat

generic

≥ 8.5.55 and ≤ 8.5.73 · ≥ 9.0.35 and ≤ 9.0.56 · 10.0.0:milestone10 · 10.0.0:milestone5 · 10.0.0:milestone6 · 10.0.0:milestone7 · 10.0.0:milestone8 · 10.0.0:milestone9 · ≥ 10.0.1 and ≤ 10.0.14 · 10.1.0:milestone1 · 10.1.0:milestone2 · 10.1.0:milestone3 · 10.1.0:milestone4 · 10.1.0:milestone5 · 10.1.0:milestone6 · 10.1.0:milestone7 · 10.1.0:milestone8

nvd

debian

debian linux

generic

10.0 · 11.0

nvd

oracle

agile engineering data management

generic

6.2.1.0

nvd

oracle

communications cloud native core policy

generic

1.15.0

nvd

oracle

financial services crime and compliance management studio

generic

8.0.8.2.0 · 8.0.8.3.0

nvd

oracle

managed file transfer

generic

12.2.1.3.0 · 12.2.1.4.0

nvd

oracle

mysql enterprise monitor

generic

≤ 8.0.29

osv

org.apache.tomcat

tomcat

generic

＜ 8.5.75 · ≥ 9.0.0 and ＜ 9.0.58 · ≥ 10.0.0 and ＜ 10.0.16

References

URL	Tags
https://github.com/apache/tomcat	PACKAGE
https://lists.apache.org/thread/l8x62p3k19yfcb208jo4zrb83k5mfwg9	WEB
https://lists.debian.org/debian-lts-announce/2022/10/msg00029.html	WEB
https://security.netapp.com/advisory/ntap-20220217-0010	WEB
https://www.debian.org/security/2022/dsa-5265	WEB
https://www.oracle.com/security-alerts/cpuapr2022.html	WEB
https://www.oracle.com/security-alerts/cpujul2022.html	WEB
https://security.netapp.com/advisory/ntap-20220217-0010/	Third Party Advisory

URL

Timeline

Published	2022-01-27	By the CVE Program.
NVD record modified	2026-06-17	NVD's own last-modified date for this record.
Last VRT activity	2026-10-01	Most recent commit touching this CVE's classification, patch or rule file.
Classification created	2026-11-13	First commit adding this CVE's research note.

Published

2022-01-27

By the CVE Program.

NVD record modified

2026-06-17

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

Last VRT activity

2026-10-01

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

Classification created

2026-11-13

First commit adding this CVE's research note.

How VRT decided (4 of 24 rules ran)

4 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 no match An ARMR security-rule template on disk for this CVE

4 manual-classification decided it matched Protected by Waratek A researcher found this CVE protected by the Marshal RCE rule, ARMR Process rule.

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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