CVE-2008-6415: Buffer overflow in YoungZSoft CCProxy 6.5 might allow remote attackers to execute arbitrary code via a CONNECT

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HIGH 10.0DOWNGRADE

CVE-2008-6415 is a high-severity flaw (CVSS 10.0) affecting ccproxy. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Buffer overflow in YoungZSoft CCProxy 6.5 might allow remote attackers to execute arbitrary code via a CONNECTION request with a long hostname.

Why this priority

Critical severity
EPSS top 8%: very likely to be exploited

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

Risk facts

CVSS score	10.0 (High)
EPSS exploit chance	4.8% (top 8%)
CISA exploited list	No
Weakness	CWE-119
Published	2009-03-06
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: youngzsoft

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2009-03-06 11:30 UTCPublished CVE record published
2026-06-16 23:02 UTCUpdated Record last modified

youngzsoft ccproxy DOWNGRADE

Affected: 6.5

Fixed in: no fixed release known

Safe to downgrade to: a release before 6.5

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 6.5 (Debian / Ubuntu)

apt-cache madison ccproxy sudo apt install ccproxy=<VERSION_BEFORE_6.5> sudo apt-mark hold ccproxy

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

dnf --showduplicates list ccproxy sudo dnf downgrade ccproxy-<VERSION_BEFORE_6.5> sudo dnf versionlock add ccproxy

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-2008-6415?

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

Is CVE-2008-6415 being exploited?

CVE-2008-6415 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-2008-6415 affect?

CVE-2008-6415 affects ccproxy. Severity is high (CVSS 10.0). Buffer overflow in YoungZSoft CCProxy 6.5 might allow remote attackers to execute arbitrary code via a CONNECTION request with a long hostname.

How urgent is CVE-2008-6415?

Priority 58/100. Critical severity; EPSS top 8%: very likely to be exploited

References

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