CVE-2020-27996: An issue was discovered in SmartStoreNET before 4.0.1

Q: How do I fix CVE-2020-27996?

smartstorenet: upgrade to 4.0.1. Exact commands for each OS are on this page.

Q: Is CVE-2020-27996 being exploited?

CVE-2020-27996 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-2020-27996 affect?

CVE-2020-27996 affects smartstorenet. Severity is high (CVSS 8.8). An issue was discovered in SmartStoreNET before 4.0.1. It does not properly consider the need for a CustomModelPartAttribute decoration in certain ModelBase.CustomProperties situations.

Q: How urgent is CVE-2020-27996?

Priority 56/100. High severity; Public exploit reference

This month

HIGH 8.8UPGRADE

CVE-2020-27996 is a high-severity flaw (CVSS 8.8) affecting smartstorenet. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in SmartStoreNET before 4.0.1. It does not properly consider the need for a CustomModelPartAttribute decoration in certain ModelBase.CustomProperties situations.

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	2.2% (top 18%)
CISA exploited list	No
Published	2020-10-29
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: smartstore

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

Am I affected?

Timeline

2020-10-29 18:15 UTCPublished CVE record published
2026-06-17 03:09 UTCUpdated Record last modified

smartstore smartstorenet UPGRADE

Affected: < 4.0.1

Fixed in: 4.0.1

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 4.0.1 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade smartstorenet

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-2020-27996?

smartstorenet: upgrade to 4.0.1. Exact commands for each OS are on this page.

Is CVE-2020-27996 being exploited?

CVE-2020-27996 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-2020-27996 affect?

CVE-2020-27996 affects smartstorenet. Severity is high (CVSS 8.8). An issue was discovered in SmartStoreNET before 4.0.1. It does not properly consider the need for a CustomModelPartAttribute decoration in certain ModelBase.CustomProperties situations.

How urgent is CVE-2020-27996?

Priority 56/100. High severity; Public exploit reference

Related CVEs

CVE-2020-36365 MEDIUM 6.1 UPGRADE Smartstore (aka SmartStoreNET) before 4.1.0 allows CommonController.ClearCache, ClearDatabaseCache, RestartApp
CVE-2020-36364 CRITICAL 9.1 UPGRADE An issue was discovered in Smartstore (aka SmartStoreNET) before 4.1.0
CVE-2020-27997 HIGH 8.8 UPGRADE An issue was discovered in SmartStoreNET before 4.1.0

References

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