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CVE-2019-7256

From Exploited flaws, HARD’s guide to the flaws being used in attacks · Checked
This article is about a flaw in Nice Linear eMerge E3-Series. For every flaw being used in attacks, see Exploited flaws.

CVE-2019-7256 is a security flaw in Nice Linear eMerge E3-Series. Attackers can run their own code on Nice Linear eMerge E3-Series. The US Cybersecurity and Infrastructure Security Agency (CISA) added it to its catalog of flaws known to be used in attacks on 25 Mar 2024.[1]

Nice Linear eMerge E3-Series is business software or equipment. Most families won’t have it, but attackers break into it to get inside companies, and from there to what those companies hold about their customers, patients and staff. Nice has published a fix or advice.

Description

CISA calls it an OS command injection in Nice Linear eMerge E3-Series. In its words: “Nice Linear eMerge E3-Series contains an OS command injection vulnerability that allows an attacker to conduct remote code execution.”[1]

The underlying weakness is OS command injection (CWE-78), in MITRE’s list of common software weaknesses.[2]

It scores 9.8 out of 10 on the Common Vulnerability Scoring System, which rates it critical, scored by NVD using CVSS 3.1.[2]

Affected versions

NVD’s record doesn’t list version ranges for it; Nice’s advisory has them[3]. CISA names the product as Nice Linear eMerge E3-Series.

Most families won’t have Nice Linear eMerge E3-Series; it’s for whoever looks after IT at work.

Exploitation

CISA added it to its catalog of known exploited vulnerabilities on 25 Mar 2024, 1,728 days after it was made public. CISA lists a flaw only when it has reliable evidence of it being exploited, and gave US federal agencies until 15 Apr 2024 to fix it.[1]

FIRST’s Exploit Prediction Scoring System, which estimates how likely a flaw is to be used in attacks in the next 30 days from what it sees across the internet, puts it at 97%. That’s in the top 1% of the flaws it scores.[4]

CISA assesses it as automatable: attackers can run it against many targets at once.

CISA doesn’t say who was attacked, or how.

Fix

Nice has published a fix or advice.[3] CISA’s required action: “Contact the vendor for guidance on remediating firmware, per their advisory.”[1]

  1. Check whether you use it.Nice Linear eMerge E3-Series is business software or equipment, so most families won’t have it. If you run a business, or work from home on company equipment, ask whoever looks after your IT.
  2. Send this page to your IT person.Ask them to confirm it’s fixed, or not in use. CISA gave US government agencies until 15 Apr 2024 to fix it.
  3. If it can’t be fixed, take it offline.CISA’s advice when there’s no fix is to stop using the product, or take it off the internet, until there is one.

You can’t fix someone else’s server, but you can watch for what follows a break-in like this: a breach notice, a password reset you didn’t ask for, or a scam message that knows things it shouldn’t. HARD watches for those for you and your family.

Timeline

DateEvent
The flaw is made public in the National Vulnerability Database, with a severity score of 9.8.[2]
CISA adds it to its catalog of flaws known to be used in attacks.[1]
CISA’s deadline for US government agencies to fix it.[1]
FIRST puts the odds of it being used in attacks in the next 30 days at 97%.[4]

See also

Other OS command injection flaws

  • CVE-2026-110447, Collabora Online – Built-in CODE Server: online – built-in CODE server OS command injection ·
  • CVE-2026-106931, EG Secure Solutions SiteGuard Server Edition: OS command injection ·
  • CVE-2026-83549, SonicWall SMA1000 Appliances: OS command injection ·
  • CVE-2026-49869, Kestra OSS: OSS OS command injection ·
  • CVE-2026-73570, Synacor Zimbra Collaboration Suite (ZCS): OS command injection ·

Added the same day

  • CVE-2023-48788, Fortinet FortiClient EMS: SQL injection ·
  • CVE-2021-44529, Ivanti Endpoint Manager Cloud Service Appliance (EPM CSA): code injection ·

References

  1. ^ Cybersecurity and Infrastructure Security Agency. “Nice Linear eMerge E3-Series OS Command Injection Vulnerability”. Known Exploited Vulnerabilities Catalog, added 25 Mar 2024.
  2. ^ National Institute of Standards and Technology. “CVE-2019-7256 Detail”. National Vulnerability Database, published 2 Jul 2019.
  3. ^ Nice. Advisories and fixes: linear-solutions.com.
  4. ^ FIRST. “Exploit Prediction Scoring System”. EPSS 0.971, percentile 99.9, 31 Oct 2026.
  5. CVE Program. “CVE-2019-7256”. The official CVE record.

This article is built from CISA’s catalog (version 2026.10.30), NVD’s record and FIRST’s scores, kept in HARD’s database and checked every morning. The plain English is HARD’s.