CVE-2015-0961: Barracuda Web Filter before 8.1.0.005, when SSL Inspection is enabled, does not verify X.509 certificates from

Q: How do I fix CVE-2015-0961?

web filter: upgrade to newer than 8.0.003. Exact commands for each OS are on this page.

Q: Is CVE-2015-0961 being exploited?

CVE-2015-0961 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-2015-0961 affect?

CVE-2015-0961 affects web filter. Severity is medium (CVSS 4.3). Barracuda Web Filter before 8.1.0.005, when SSL Inspection is enabled, does not verify X.509 certificates from upstream SSL servers, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted ce

Q: How urgent is CVE-2015-0961?

Priority 29/100. No elevated risk signals yet.

Routine

MEDIUM 4.3UPGRADE

CVE-2015-0961 is a medium-severity flaw (CVSS 4.3) affecting web filter. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Barracuda Web Filter before 8.1.0.005, when SSL Inspection is enabled, does not verify X.509 certificates from upstream SSL servers, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	4.3 (Medium)
EPSS exploit chance	0.8% (top 45%)
CISA exploited list	No
Published	2015-05-25
Last modified	2026-06-17

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

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

Am I affected?

Timeline

2015-05-25 22:59 UTCPublished CVE record published
2026-06-17 00:21 UTCUpdated Record last modified

barracuda web filter UPGRADE

Affected: <= 8.0.003

Fixed in: newer than 8.0.003

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy web-filter || rpm -q web-filter || web-filter --version

2. UPGRADE to newer than 8.0.003 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade web-filter

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade web-filter

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-2015-0961?

web filter: upgrade to newer than 8.0.003. Exact commands for each OS are on this page.

Is CVE-2015-0961 being exploited?

CVE-2015-0961 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-2015-0961 affect?

CVE-2015-0961 affects web filter. Severity is medium (CVSS 4.3). Barracuda Web Filter before 8.1.0.005, when SSL Inspection is enabled, does not verify X.509 certificates from upstream SSL servers, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted ce

How urgent is CVE-2015-0961?

Priority 29/100. No elevated risk signals yet.

Related CVEs

CVE-2015-0962 MEDIUM 4.3 DOWNGRADE Barracuda Web Filter 7.x and 8.x before 8.1.0.005, when SSL Inspection is enabled, uses the same root Certific
CVE-2002-0709 HIGH 7.5 DOWNGRADE DOWNGRADE SQL injection vulnerabilities in the Web Reports Server for SurfControl SuperScout WebFilter allow remote atta
CVE-2002-0708 MEDIUM 5.0 DOWNGRADE DOWNGRADE Directory traversal vulnerability in the Web Reports Server for SurfControl SuperScout WebFilter allows remote
CVE-2002-0707 MEDIUM 5.0 DOWNGRADE DOWNGRADE The Web Reports Server for SurfControl SuperScout WebFilter allows remote attackers to cause a denial of servi
CVE-2002-0706 HIGH 7.5 DOWNGRADE DOWNGRADE UserManager.js in the Web Reports Server for SurfControl SuperScout WebFilter uses weak encryption for adminis

References

← Back to latest CVEs