CVE-2020-7860: UnEGG v0.5 and eariler versions have a Integer overflow vulnerability, triggered when the user opens a malform

This month

HIGH 7.8UPGRADE

CVE-2020-7860 is a high-severity flaw (CVSS 7.8) affecting unegg. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

UnEGG v0.5 and eariler versions have a Integer overflow vulnerability, triggered when the user opens a malformed specific file that is mishandled by UnEGG. Attackers could exploit this and arbitrary code execution. This issue affects: Estsoft UnEGG 0.5 versions prior to 1.0 on linux.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.9% (top 41%)
CISA exploited list	No
Weakness	CWE-190
Published	2021-06-11
Last modified	2026-06-17

Publisher (CNA): KrCERT/CC · Vendor: unegg project

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

Am I affected?

Timeline

2021-06-11 18:15 UTCPublished CVE record published
2026-06-17 03:25 UTCUpdated Record last modified

unegg project unegg UPGRADE

Affected: >= 0.5 and < 1.0

Fixed in: 1.0

Safe to downgrade to: a release before 0.5

1. Check installed version

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

2. UPGRADE to 1.0 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade unegg

Note

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

3. If no update is available yet, DOWNGRADE to a release before 0.5 (Debian / Ubuntu)

apt-cache madison unegg sudo apt install unegg=<VERSION_BEFORE_0.5> sudo apt-mark hold unegg

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list unegg sudo dnf downgrade unegg-<VERSION_BEFORE_0.5> sudo dnf versionlock add unegg

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-2020-7860?

unegg: upgrade to 1.0. Exact commands for each OS are on this page.

Is CVE-2020-7860 being exploited?

CVE-2020-7860 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-2020-7860 affect?

CVE-2020-7860 affects unegg. Severity is high (CVSS 7.8). UnEGG v0.5 and eariler versions have a Integer overflow vulnerability, triggered when the user opens a malformed specific file that is mishandled by UnEGG. Attackers could exploit this and arbitrary code execution. This issue affects: Estso

How urgent is CVE-2020-7860?

Priority 42/100. High severity

References

← Back to latest CVEs