CVE-2015-6027: Castle Rock Computing SNMPc before 2015-12-17 has XSS via SNMP.

Routine

MEDIUM 6.1DOWNGRADE

CVE-2015-6027 is a medium-severity flaw (CVSS 6.1) affecting snmpc. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Castle Rock Computing SNMPc before 2015-12-17 has XSS via SNMP.

Why this priority

No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.8% (top 44%)
CISA exploited list	No
Weakness	CWE-79
Published	2017-04-10
Last modified	2026-06-17

Publisher (CNA): CERT/CC · Vendor: castlerock

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

Am I affected?

Timeline

2017-04-10 03:59 UTCPublished CVE record published
2026-06-17 00:30 UTCUpdated Record last modified

castlerock snmpc DOWNGRADE

Affected: 9.0 · 12.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 9.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 9.0 (Debian / Ubuntu)

apt-cache madison snmpc sudo apt install snmpc=<VERSION_BEFORE_9.0> sudo apt-mark hold snmpc

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list snmpc sudo dnf downgrade snmpc-<VERSION_BEFORE_9.0> sudo dnf versionlock add snmpc

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2015-6027?

snmpc: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2015-6027 being exploited?

CVE-2015-6027 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-2015-6027 affect?

CVE-2015-6027 affects snmpc. Severity is medium (CVSS 6.1). Castle Rock Computing SNMPc before 2015-12-17 has XSS via SNMP.

How urgent is CVE-2015-6027?

Priority 35/100. No elevated risk signals yet.

Related CVEs

CVE-2015-6028 HIGH 8.8 DOWNGRADE Castle Rock Computing SNMPc before 2015-12-17 has SQL injection via the sc parameter.
CVE-2008-2214 HIGH 10.0 UPGRADE Stack-based buffer overflow in the Network Manager in Castle Rock Computing SNMPc 7.1 and earlier allows remot
CVE-2007-3098 MEDIUM 5.0 UPGRADE The SNMPc Server (crserv.exe) process in Castle Rock Computing SNMPc before 7.0.19 allows remote attackers to
CVE-2003-0745 HIGH 10.0 DOWNGRADE SNMPc 6.0.8 and earlier performs authentication to the server on the client side, which allows remote attacker

References

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