CVE-2015-3959: The firmware in MNS before 4.5.6 on Belden GarrettCom Magnum 6K and Magnum 10K switches has a hardcoded serial

Q: How do I fix CVE-2015-3959?

magnum 10k firmware: upgrade to newer than 4.5.5; magnum 6k firmware: upgrade to newer than 4.5.5. Exact commands for each OS are on this page.

Q: Is CVE-2015-3959 being exploited?

CVE-2015-3959 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-2015-3959 affect?

CVE-2015-3959 affects magnum 10k firmware, magnum 6k firmware. Severity is high (CVSS 7.2). The firmware in MNS before 4.5.6 on Belden GarrettCom Magnum 6K and Magnum 10K switches has a hardcoded serial-console password for a privileged account, which might allow physically proximate attackers to obtain access by establishing a co

Routine

HIGH 7.2UPGRADEUPGRADE

CVE-2015-3959 is a high-severity flaw (CVSS 7.2) affecting magnum 10k firmware, magnum 6k firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The firmware in MNS before 4.5.6 on Belden GarrettCom Magnum 6K and Magnum 10K switches has a hardcoded serial-console password for a privileged account, which might allow physically proximate attackers to obtain access by establishing a console session to a nonstandard installation on which this account is enabled, and leveraging knowledge of this password.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.2 (High)
EPSS exploit chance	0.4% (top 68%)
CISA exploited list	No
Published	2015-08-04
Last modified	2026-06-17

Publisher (CNA): ICS-CERT · Vendor: garrettcom

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

Am I affected?

Timeline

2015-08-04 01:59 UTCPublished CVE record published
2026-06-17 00:26 UTCUpdated Record last modified

garrettcom magnum 10k firmware UPGRADE

Affected: <= 4.5.5

Fixed in: newer than 4.5.5

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

garrettcom magnum 6k firmware UPGRADE

Affected: <= 4.5.5

Fixed in: newer than 4.5.5

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

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-2015-3959?

magnum 10k firmware: upgrade to newer than 4.5.5; magnum 6k firmware: upgrade to newer than 4.5.5. Exact commands for each OS are on this page.

Is CVE-2015-3959 being exploited?

CVE-2015-3959 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-2015-3959 affect?

CVE-2015-3959 affects magnum 10k firmware, magnum 6k firmware. Severity is high (CVSS 7.2). The firmware in MNS before 4.5.6 on Belden GarrettCom Magnum 6K and Magnum 10K switches has a hardcoded serial-console password for a privileged account, which might allow physically proximate attackers to obtain access by establishing a co

How urgent is CVE-2015-3959?

Priority 33/100. High severity

Related CVEs

CVE-2015-3961 LOW 3.5 UPGRADE UPGRADE The web-server component in MNS before 4.5.6 on Belden GarrettCom Magnum 6K and Magnum 10K switches allows rem
CVE-2015-3960 MEDIUM 4.3 UPGRADE UPGRADE The firmware in MNS before 4.5.6 on Belden GarrettCom Magnum 6K and Magnum 10K switches uses hardcoded RSA pri
CVE-2015-3942 MEDIUM 4.3 UPGRADE UPGRADE Multiple cross-site scripting (XSS) vulnerabilities in the web-server component in MNS before 4.5.6 on Belden

References

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