CVE-2015-1454: Blue Coat ProxyClient before 3.3.3.3 and 3.4.x before 3.4.4.10 and Unified Agent before 4.1.3.151952 does not

Q: How do I fix CVE-2015-1454?

proxyclient: upgrade to 3.3.3.3, 3.4.4.10; unified agent: upgrade to newer than 4.1.3. Exact commands for each OS are on this page.

Q: Is CVE-2015-1454 being exploited?

CVE-2015-1454 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-2015-1454 affect?

CVE-2015-1454 affects proxyclient, unified agent. Severity is high (CVSS 7.1). Blue Coat ProxyClient before 3.3.3.3 and 3.4.x before 3.4.4.10 and Unified Agent before 4.1.3.151952 does not properly validate certain certificates, which allows man-in-the-middle attackers to spoof ProxySG Client Managers, and consequentl

Routine

HIGH 7.1UPGRADEUPGRADE

CVE-2015-1454 is a high-severity flaw (CVSS 7.1) affecting proxyclient, unified agent. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Blue Coat ProxyClient before 3.3.3.3 and 3.4.x before 3.4.4.10 and Unified Agent before 4.1.3.151952 does not properly validate certain certificates, which allows man-in-the-middle attackers to spoof ProxySG Client Managers, and consequently modify configurations and execute arbitrary software updates, via a crafted certificate.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.1 (High)
EPSS exploit chance	0.7% (top 47%)
CISA exploited list	No
Weakness	CWE-310
Published	2015-02-02
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: bluecoat

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

Am I affected?

Timeline

2015-02-02 16:59 UTCPublished CVE record published
2026-06-17 00:22 UTCUpdated Record last modified

bluecoat proxyclient UPGRADE

Affected: >= 3.3 and < 3.3.3.3 · >= 3.4 and < 3.4.4.10

Fixed in: 3.3.3.3, 3.4.4.10

Safe to downgrade to: a release before 3.3

1. Check installed version

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

2. UPGRADE to 3.3.3.3 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade proxyclient

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 3.3 (Debian / Ubuntu)

apt-cache madison proxyclient sudo apt install proxyclient=<VERSION_BEFORE_3.3> sudo apt-mark hold proxyclient

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list proxyclient sudo dnf downgrade proxyclient-<VERSION_BEFORE_3.3> sudo dnf versionlock add proxyclient

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.

bluecoat unified agent UPGRADE

Affected: <= 4.1.3

Fixed in: newer than 4.1.3

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy unified-agent || rpm -q unified-agent || unified-agent --version

2. UPGRADE to newer than 4.1.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade unified-agent

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade unified-agent

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-2015-1454?

proxyclient: upgrade to 3.3.3.3, 3.4.4.10; unified agent: upgrade to newer than 4.1.3. Exact commands for each OS are on this page.

Is CVE-2015-1454 being exploited?

CVE-2015-1454 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-2015-1454 affect?

CVE-2015-1454 affects proxyclient, unified agent. Severity is high (CVSS 7.1). Blue Coat ProxyClient before 3.3.3.3 and 3.4.x before 3.4.4.10 and Unified Agent before 4.1.3.151952 does not properly validate certain certificates, which allows man-in-the-middle attackers to spoof ProxySG Client Managers, and consequentl

How urgent is CVE-2015-1454?

Priority 38/100. High severity

Related CVEs

CVE-2017-13674 HIGH 7.8 DOWNGRADE Symantec ProxyClient 3.4 for Windows is susceptible to a privilege escalation vulnerability

References

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