# Backup Exec vulnerabilities

> Backup Exec is made by Veritas. We track 6 published vulnerabilities in it, across 15 versions. 3 of them are on the list of flaws known to be exploited, the newest added on 7 April 2023. If you run Backup Exec, check your version against the exploited flaws below and patch those first.

Canonical page: https://www.precursorintelligence.com/product/veritas/backup_exec

## At a glance

- **Made by:** [Veritas](https://www.precursorintelligence.com/vendors/veritas)
- **Published vulnerabilities:** 6
- **Known to be exploited:** 3
- **Versions tracked:** 15
- **Most recently added to the known-exploited list:** [CVE-2021-27876](https://www.precursorintelligence.com/what-is/cve-2021-27876), 7 April 2023. We keep watching the list.

## Which versions of Backup Exec do the exploited flaws hit?

Each exploited flaw lists the versions it affects, as published. "before 21.2" means every version up to, but not including, 21.2.

- [CVE-2021-27876](https://www.precursorintelligence.com/what-is/cve-2021-27876) (Veritas Backup Exec Agent File Access Vulnerability): before 21.2
- [CVE-2021-27877](https://www.precursorintelligence.com/what-is/cve-2021-27877) (Veritas Backup Exec Agent Improper Authentication Vulnerability): before 21.2
- [CVE-2021-27878](https://www.precursorintelligence.com/what-is/cve-2021-27878) (Veritas Backup Exec Agent Command Execution Vulnerability): before 21.2

## Which Backup Exec vulnerabilities are being exploited?

3 flaws are on the government list of vulnerabilities known to be exploited, newest first:

- [CVE-2021-27876](https://www.precursorintelligence.com/what-is/cve-2021-27876): Veritas Backup Exec Agent File Access Vulnerability. High, CVSS 8.1, chance of use in 30 days 14%, known exploited since 7 April 2023.
- [CVE-2021-27877](https://www.precursorintelligence.com/what-is/cve-2021-27877): Veritas Backup Exec Agent Improper Authentication Vulnerability. High, CVSS 8.2, chance of use in 30 days 65%, known exploited since 7 April 2023.
- [CVE-2021-27878](https://www.precursorintelligence.com/what-is/cve-2021-27878): Veritas Backup Exec Agent Command Execution Vulnerability. High, CVSS 8.8, chance of use in 30 days 24%, known exploited since 7 April 2023.

## Which Backup Exec flaws are most likely to be used?

Ranked by the latest exploit-likelihood forecast (the chance each flaw is used in an attack in the next 30 days):

- [CVE-2017-8895](https://www.precursorintelligence.com/what-is/cve-2017-8895): 71%, Critical (CVSS 9.8)
- [CVE-2021-27877](https://www.precursorintelligence.com/what-is/cve-2021-27877): 65%, High (CVSS 8.2), known exploited
- [CVE-2005-0772](https://www.precursorintelligence.com/what-is/cve-2005-0772): 36%, High (CVSS 7.5)
- [CVE-2021-27878](https://www.precursorintelligence.com/what-is/cve-2021-27878): 24%, High (CVSS 8.8), known exploited
- [CVE-2021-27876](https://www.precursorintelligence.com/what-is/cve-2021-27876): 14%, High (CVSS 8.1), known exploited
- [CVE-2020-36167](https://www.precursorintelligence.com/what-is/cve-2020-36167): 0.5%, High (CVSS 8.8)

## Questions

### How many vulnerabilities does Backup Exec have?

We track 6 published vulnerabilities listed under the name Backup Exec, across 15 versions. The most recent Backup Exec flaw added to the known-exploited list is CVE-2021-27876, on 7 April 2023.

### Which Backup Exec vulnerabilities are being exploited?

3 are on the list of flaws known to be exploited. The most recently added are CVE-2021-27876, CVE-2021-27877 and CVE-2021-27878.

### Which versions of Backup Exec do the exploited flaws affect?

Each flaw names its own versions, usually as ranges. The newest, CVE-2021-27876, affects before 21.2. The versions for every exploited flaw are listed on this page.

### How do I get alerts for Backup Exec?

Create a Precursor Intelligence account and track Backup Exec. We match it against every published flaw, give each one a risk score from 0 to 100 and keep watching, so you hear about new ones as soon as we know, by email, in the app or by webhook.

## Running Backup Exec?

Precursor Intelligence keeps checking for you:

- **Tell us what you run.** Pick your software from a list, or let us work it out from your website.
- **We match it to every flaw.** Over 400,000 published flaws, checked against your list.
- **Ranked by real-world risk.** Every flaw gets a 0 to 100 risk score, kept up to date, led by evidence criminals are using it.
- **Told as soon as we know.** An alert by email, in the app or by webhook to your own tools.

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