CVE-2020-6582
Nagios NRPE 3.2.1 has a Heap-Based Buffer Overflow, as demonstrated by interpretation of a small...
Nagios NRPE 3.2.1 has a Heap-Based Buffer Overflow, as demonstrated by interpretation of a small negative number as a large positive number during a bzero call.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
7.5
Nagios NRPE 3.2.1 has a Heap-Based Buffer Overflow, as demonstrated by interpretation of a small negative number as a large positive number during a bzero call.
- Record
CVE-2020-6582- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Weakness
- CWE-681, CWE-787
- Updated
- 2026-11-02
CVE List No score
Nagios NRPE 3.2.1 has a Heap-Based Buffer Overflow, as demonstrated by interpretation of a small negative number as a large positive number during a bzero call.
- Record
CVE-2020-6582- Updated
- 2026-11-02
EUVDEUVD-2020-27730 No score
Nagios NRPE 3.2.1 has a Heap-Based Buffer Overflow, as demonstrated by interpretation of a small negative number as a large positive number during a bzero call.
- Record
EUVD-2020-27730- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-4wcp-4x6x-h4mf
7.5
Nagios NRPE 3.2.1 has a Heap-Based Buffer Overflow, as demonstrated by interpretation of a small...
Nagios NRPE 3.2.1 has a Heap-Based Buffer Overflow, as demonstrated by interpretation of a small negative number as a large positive number during a bzero call.
- Record
GHSA-4wcp-4x6x-h4mf- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-787
- Updated
- 2026-11-02
OSVALPINE-CVE-2020-6582
7.5
Nagios NRPE 3.2.1 has a Heap-Based Buffer Overflow, as demonstrated by interpretation of a small negative number as a large positive number during a bzero call.
- Record
ALPINE-CVE-2020-6582- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSV
7.5
Nagios NRPE 3.2.1 has a Heap-Based Buffer Overflow, as demonstrated by interpretation of a small negative number as a large positive number during a bzero call.
- Record
CVE-2020-6582- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVDEBIAN-CVE-2020-6582
7.5
Nagios NRPE 3.2.1 has a Heap-Based Buffer Overflow, as demonstrated by interpretation of a small negative number as a large positive number during a bzero call.
- Record
DEBIAN-CVE-2020-6582- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2020-6582
7.5
Nagios NRPE 3.2.1 has a Heap-Based Buffer Overflow, as demonstrated by interpretation of a small negative number as a large positive number during a bzero call.
- Record
UBUNTU-CVE-2020-6582- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVMGASA-2020-0247 No score
Updated nrpe packages fix security vulnerability
Updated nrpe packages fix security vulnerabilities:
Nagios NRPE 3.2.1 has Insufficient Filtering because, for example, nasty_metachars interprets \n as the character \ and the character n (not as the \n newline sequence). This can cause command injection (CVE-2020-6581).
Nagios NRPE 3.2.1 has a Heap-Based Buffer Overflow, as demonstrated by interpretation of a small negative number as a large positive number during a bzero call (CVE-2020-6582).
- Record
MGASA-2020-0247- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
nrpeAlpine:v3.13 |
before 4.0.0-r0 | 4.0.0-r0 |
nrpeAlpine:v3.14 |
before 4.0.0-r0 | 4.0.0-r0 |
nrpeAlpine:v3.15 |
before 4.0.0-r0 | 4.0.0-r0 |
nrpeAlpine:v3.16 |
before 4.0.0-r0 | 4.0.0-r0 |
nrpeAlpine:v3.18 |
before 4.0.0-r0 | 4.0.0-r0 |
nrpeAlpine:v3.19 |
before 4.0.0-r0 | 4.0.0-r0 |
nrpeAlpine:v3.20 |
before 4.0.0-r0 | 4.0.0-r0 |
nrpeAlpine:v3.21 |
before 4.0.0-r0 | 4.0.0-r0 |
nrpeAlpine:v3.22 |
before 4.0.0-r0 | 4.0.0-r0 |
nrpeAlpine:v3.23 |
before 4.0.0-r0 | 4.0.0-r0 |
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| Package | Affected | Fixed |
|---|---|---|
nrpeAlpine:v3.24 |
before 4.0.0-r0 | 4.0.0-r0 |
nagios-nrpeDebian:12 |
before 4.0.0-1 | 4.0.0-1 |
nagios-nrpeDebian:13 |
before 4.0.0-1 | 4.0.0-1 |
nagios-nrpeDebian:14 |
before 4.0.0-1 | 4.0.0-1 |
nrpeMageia:7 |
before 3.2.1-3.2.mga7 | 3.2.1-3.2.mga7 |
nagios-nrpeUbuntu:16.04:LTS |
All versions, plus listed versions 2.15-1ubuntu12.15-1ubuntu1.1 |
None known |
nagios-nrpeUbuntu:18.04:LTS |
All versions, plus listed versions 3.2.0-4ubuntu23.2.1-1ubuntu1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-6582 is a high vulnerability (CVSS 7.5) in Fedoraproject Fedora, published March 16, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 4.44%, the 91st percentile. Fixed in nrpe 4.0.0-r0.
References
herolab.usd.de/security-advisories
herolab.usd.de/security-advisories/usd-2020-0001
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2DNGKXVDB43E3KQRA6W5QZT3Z46XZLQM
nvd.nist.gov/vuln/detail/CVE-2020-6582
lists.fedoraproject.org/archives/list/[email protected]/message/2DNGKXVDB43E3KQRA6W5QZT3Z46XZLQM
github.com/advisories/GHSA-4wcp-4x6x-h4mf
Show 8 moreShow less
security.alpinelinux.org/vuln/CVE-2020-6582
security-tracker.debian.org/tracker/CVE-2020-6582
advisories.mageia.org/MGASA-2020-0247.html
bugs.mageia.org/show_bug.cgi?id=26482
herolab.usd.de/security-advisories/usd-2020-0002
lists.fedoraproject.org/archives/list/[email protected]/thread/4HL6LSLRKKPUIY2PIWFGZ7QMM7FKARMR
ubuntu.com/security/CVE-2020-6582
cve.org/CVERecord?id=CVE-2020-6582