CVE-2021-26612: An improper input validation leading to arbitrary file creation was discovered in copy method of Nexacro platf

Q: How do I fix CVE-2021-26612?

nexacro: upgrade to newer than 17.1.2.500. Exact commands for each OS are on this page.

Q: Is CVE-2021-26612 being exploited?

CVE-2021-26612 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-2021-26612 affect?

CVE-2021-26612 affects nexacro. Severity is high (CVSS 8.1). An improper input validation leading to arbitrary file creation was discovered in copy method of Nexacro platform. Remote attackers use copy method to execute arbitrary command after the file creation included malicious code.

This month

HIGH 8.1UPGRADE

CVE-2021-26612 is a high-severity flaw (CVSS 8.1) affecting nexacro. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An improper input validation leading to arbitrary file creation was discovered in copy method of Nexacro platform. Remote attackers use copy method to execute arbitrary command after the file creation included malicious code.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.1 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.2% (top 32%)
CISA exploited list	No
Weakness	CWE-20
Published	2021-11-30
Last modified	2026-06-17

Publisher (CNA): KrCERT/CC · Vendor: tobesoft

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

Am I affected?

Timeline

2021-11-30 19:15 UTCPublished CVE record published
2026-06-17 03:43 UTCUpdated Record last modified

tobesoft nexacro UPGRADE

Affected: <= 17.1.2.500

Fixed in: newer than 17.1.2.500

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 17.1.2.500 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade nexacro

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-2021-26612?

nexacro: upgrade to newer than 17.1.2.500. Exact commands for each OS are on this page.

Is CVE-2021-26612 being exploited?

CVE-2021-26612 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-2021-26612 affect?

CVE-2021-26612 affects nexacro. Severity is high (CVSS 8.1). An improper input validation leading to arbitrary file creation was discovered in copy method of Nexacro platform. Remote attackers use copy method to execute arbitrary command after the file creation included malicious code.

How urgent is CVE-2021-26612?

Priority 45/100. High severity

Related CVEs

CVE-2021-26625 HIGH 8.8 UPGRADE Insufficient Verification of input Data leading to arbitrary file download and execute was discovered in Nexac
CVE-2021-26613 HIGH 8.1 UPGRADE improper input validation vulnerability in nexacro permits copying file to the startup folder using rename met
CVE-2021-26607 HIGH 8.1 UPGRADE An Improper input validation in execDefaultBrowser method of NEXACRO17 allows a remote attacker to execute arb
CVE-2020-7874 HIGH 8.8 UPGRADE Download of code without integrity check vulnerability in NEXACRO14 Runtime ActiveX control of tobesoft Co., L

References

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