CVE-2020-17361: An issue was discovered in ReadyTalk Avian 1.2.0

This month

MEDIUM 5.5DOWNGRADE

CVE-2020-17361 is a medium-severity flaw (CVSS 5.5) affecting avian. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in ReadyTalk Avian 1.2.0. The vm::arrayCopy method defined in classpath-common.h returns silently when a negative length is provided (instead of throwing an exception). This could result in data being lost during the copy, with varying consequences depending on the subsequent use of the destination buffer. NOTE: This vulnerability only affects products that are no longer supported by the maintainer

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.5 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.2% (top 32%)
CISA exploited list	No
Weakness	CWE-755
Published	2020-08-12
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: readytalk

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

Am I affected?

Timeline

2020-08-12 18:15 UTCPublished CVE record published
2026-06-17 02:58 UTCUpdated Record last modified

readytalk avian DOWNGRADE

Affected: 1.2.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.2.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.2.0 (Debian / Ubuntu)

apt-cache madison avian sudo apt install avian=<VERSION_BEFORE_1.2.0> sudo apt-mark hold avian

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list avian sudo dnf downgrade avian-<VERSION_BEFORE_1.2.0> sudo dnf versionlock add avian

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2020-17361?

avian: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2020-17361 being exploited?

CVE-2020-17361 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-2020-17361 affect?

CVE-2020-17361 affects avian. Severity is medium (CVSS 5.5). An issue was discovered in ReadyTalk Avian 1.2.0. The vm::arrayCopy method defined in classpath-common.h returns silently when a negative length is provided (instead of throwing an exception). This could result in data being lost during the

How urgent is CVE-2020-17361?

Priority 41/100. Public exploit reference

Related CVEs

CVE-2020-28371 CRITICAL 9.8 DOWNGRADE An issue was discovered in ReadyTalk Avian 1.2.0 before 2020-10-27
CVE-2020-17360 HIGH 7.8 DOWNGRADE An issue was discovered in ReadyTalk Avian 1.2.0

References

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