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CVE-2020-35510 redhat jboss-remoting

Affected softwareredhat jboss-remoting
Severity5.9 Medium CVSS 3.1 2 scores
Fixed in5.0.20.Final
WeaknessUncontrolled resource consumption (CWE-400)
Published2 Jun 2021
Updated17 Jun 2026

Description

A flaw was found in jboss-remoting in versions before 5.0.20.SP1-redhat-00001. A malicious attacker could cause threads to hold up forever in the EJB server by writing a sequence of bytes corresponding to the expected messages of a successful EJB client request, but omitting the ACK messages, or just tamper with jboss-remoting code, deleting the lines that send the ACK message from the EJB client code resulting in a denial of service. The highest threat from this vulnerability is to system availability.

Exploitation status

No public exploit

No exploit has been reported in the sources we check. Published 5 years ago.

  • CISA KEV not listed
  • VulnCheck KEV not listed
  • CISA Vulnrichment no assessment published
  • Indexed PoC none indexed
  • EPSS 1.1% chance in 30 days

Waratek protection

No exploit published

Within Waratek scope. In the sources we check, nobody has published exploit code for this CVE or reported it being exploited.

A public code fix exists.

  • Protection none
  • Action unverified
  • Review automated Upstream data
  • Record active
Decided by Medium or Low severity, no CISA or VulnCheck KEV listing, no PoC clearing the evidence bar, no CISA verdict, no Oracle advisory
Finding This CVE is MEDIUM severity, is not listed in CISA KEV or VulnCheck KEV, has no public exploit or PoC in any indexed source, carries no CISA Vulnrichment finding of a demonstrated exploit, and is not part of an Oracle Critical Patch Update. None of the signals that would put it in front of an engineer is present, and the volume of CVEs below that bar is too great to take one at a time, so no rule is written for it. This is a decision about what we act on, not a finding that the CVE is harmless — a patch may well be derivable, and a low-severity defect can still be one link in a longer chain.
Candidate fix https://bugzilla.redhat.com/show_bug.cgi?id=1905796 : a Red Hat bug: the triage, which links onward to the fix

CVSS

5.9 MEDIUM v3.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/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.

VersionScoreBandVectorAssignerType
CVSS 3.1 5.9 MEDIUM CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H NVD Primary published
CVSS 2.0 7.1 none AV:N/AC:M/Au:N/C:N/I:N/A:C NVD Primary

Affected software and releases

Maven packages

Affected and fixed versions, from OSV.dev
PackageIntroducedFixedLast affected
org.jboss.remoting:jboss-remoting 0 5.0.20.Final unbounded

Products and versions

2 products, 3 version entries
SourceVendorProductSchemeAffected versions
osv org.jboss.remoting jboss-remoting generic < 5.0.20
nvd redhat jboss-remoting generic 5.0.20 · < 5.0.20

References

URLTags
https://bugzilla.redhat.com/show_bug.cgi?id=1905796 bugzilla

Timeline

Published2021-06-02By the CVE Program.
NVD record modified2026-06-17NVD's own last-modified date for this record.