CVE-2020-5664: Deserialization of untrusted data vulnerability in XooNIps 3.49 and earlier allows remote attackers to execute

Q: How do I fix CVE-2020-5664?

xoonips: upgrade to newer than 3.49. Exact commands for each OS are on this page.

Q: Is CVE-2020-5664 being exploited?

CVE-2020-5664 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2020-5664 affect?

CVE-2020-5664 affects xoonips. Severity is critical (CVSS 9.8). Deserialization of untrusted data vulnerability in XooNIps 3.49 and earlier allows remote attackers to execute arbitrary code via unspecified vectors.

Q: How urgent is CVE-2020-5664?

Priority 61/100. Critical severity; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2020-5664 is a critical-severity flaw (CVSS 9.8) affecting xoonips. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Deserialization of untrusted data vulnerability in XooNIps 3.49 and earlier allows remote attackers to execute arbitrary code via unspecified vectors.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.7% (top 14%)
CISA exploited list	No
Weakness	CWE-502
Published	2020-11-16
Last modified	2026-06-17

Publisher (CNA): JPCERT/CC · Vendor: riken

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2020-11-16 05:15 UTCPublished CVE record published
2026-06-17 03:22 UTCUpdated Record last modified

riken xoonips UPGRADE

Affected: <= 3.49

Fixed in: newer than 3.49

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy xoonips || rpm -q xoonips || xoonips --version

2. UPGRADE to newer than 3.49 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade xoonips

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade xoonips

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2020-5664?

xoonips: upgrade to newer than 3.49. Exact commands for each OS are on this page.

Is CVE-2020-5664 being exploited?

CVE-2020-5664 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2020-5664 affect?

CVE-2020-5664 affects xoonips. Severity is critical (CVSS 9.8). Deserialization of untrusted data vulnerability in XooNIps 3.49 and earlier allows remote attackers to execute arbitrary code via unspecified vectors.

How urgent is CVE-2020-5664?

Priority 61/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2020-5663 MEDIUM 5.4 UPGRADE Stored cross-site scripting vulnerability in XooNIps 3.49 and earlier allows remote authenticated attackers to
CVE-2020-5662 MEDIUM 5.4 UPGRADE Reflected cross-site scripting vulnerability in XooNIps 3.49 and earlier allows remote authenticated attackers
CVE-2020-5659 HIGH 8.8 UPGRADE SQL injection vulnerability in the XooNIps 3.49 and earlier allows remote authenticated attackers to execute a
CVE-2020-5625 MEDIUM 6.1 UPGRADE Cross-site scripting vulnerability in XooNIps 3.48 and earlier allows remote attackers to inject an arbitrary
CVE-2020-5624 CRITICAL 9.8 UPGRADE SQL injection vulnerability in the XooNIps 3.48 and earlier allows remote attackers to execute arbitrary SQL c

References

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