CVE-2020-13695: In QuickBox Community Edition through 2.5.5 and Pro Edition through 2.1.8, the local www-data user has sudo pr

Q: How do I fix CVE-2020-13695?

quickbox: upgrade to newer than 2.5.5. Exact commands for each OS are on this page.

Q: Is CVE-2020-13695 being exploited?

CVE-2020-13695 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-2020-13695 affect?

CVE-2020-13695 affects quickbox. Severity is high (CVSS 7.2). In QuickBox Community Edition through 2.5.5 and Pro Edition through 2.1.8, the local www-data user has sudo privileges to execute grep as root without a password, which allows an attacker to obtain sensitive information via a grep of a /roo

Q: How urgent is CVE-2020-13695?

Priority 49/100. High severity; Public exploit reference

This month

HIGH 7.2UPGRADE

CVE-2020-13695 is a high-severity flaw (CVSS 7.2) affecting quickbox. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In QuickBox Community Edition through 2.5.5 and Pro Edition through 2.1.8, the local www-data user has sudo privileges to execute grep as root without a password, which allows an attacker to obtain sensitive information via a grep of a /root/*.db or /etc/shadow file.

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	7.2 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	1.7% (top 23%)
CISA exploited list	No
Weakness	CWE-269, CWE-306
Published	2020-06-01
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: quickbox

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

Am I affected?

Timeline

2020-06-01 18:15 UTCPublished CVE record published
2026-06-17 02:53 UTCUpdated Record last modified

quickbox quickbox UPGRADE

Affected: <= 2.5.5 · <= 2.1.8

Fixed in: newer than 2.5.5

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 2.5.5 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade quickbox

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-2020-13695?

quickbox: upgrade to newer than 2.5.5. Exact commands for each OS are on this page.

Is CVE-2020-13695 being exploited?

CVE-2020-13695 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-2020-13695 affect?

CVE-2020-13695 affects quickbox. Severity is high (CVSS 7.2). In QuickBox Community Edition through 2.5.5 and Pro Edition through 2.1.8, the local www-data user has sudo privileges to execute grep as root without a password, which allows an attacker to obtain sensitive information via a grep of a /roo

How urgent is CVE-2020-13695?

Priority 49/100. High severity; Public exploit reference

Software pages

Sudo vulnerabilities

Related CVEs

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CVE-2021-44981 HIGH 8.8 UPGRADE In QuickBox Pro v2.5.8 and below, the config.php file has a variable which takes a GET parameter value and par
CVE-2020-13694 HIGH 8.8 UPGRADE In QuickBox Community Edition through 2.5.5 and Pro Edition through 2.1.8, the local www-data user can execute
CVE-2020-13448 HIGH 8.8 UPGRADE QuickBox Community Edition through 2.5.5 and Pro Edition through 2.1.8 allows an authenticated remote attacker

References

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