7.5

CVE-2023-5685: Xnio: stackoverflowexception when the chain of notifier states becomes problematically big

Deferred
AliasesUBUNTU-CVE-2023-5685DEBIAN-CVE-2023-5685GHSA-7f88-5hhx-67m2
Published 22-03-2024Last modified 14-09-2026

Vulnerability summary

CVE-2023-5685 is a high (CVSS 7.5) Uncontrolled Resource Consumption vulnerability in jboss-xnio. EPSS estimates a 3.48% chance of exploitation in the next 30 days, higher than 89.1% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 7.5 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 3% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
3.48%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 5
RHSA-2023:7637RHSA-2023:7638RHSA-2023:7639RHSA-2024:10207RHSA-2024:10208

Timeline

  1. 22-03-2024
    PublishedVulnerability first disclosed.
  2. 14-09-2026
    Last modifiedVulnerability information updated.

Description

A flaw was found in XNIO. The XNIO NotifierState that can cause a Stack Overflow Exception when the chain of notifier states becomes problematically large can lead to uncontrolled resource management and a possible denial of service (DoS).

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

3.48%

Chance of exploitation in the next 30 days

Percentile

89%

Versus all other CVEs

30-day change

No change 0.00 pp

From 3.48% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Debian1 product
  • jboss-xnioAll versions (No fix recorded)
Org.jboss.xnio1 product
  • xnio-api< 3.8.14.Final
Ubuntu1 product
  • jboss-xnioAll versions (No fix recorded)

3 vendors · 3 products

References

17 links
Show all 17 references