CVE-2003-1455: Multiple buffer overflows in the launch_bcrelay function in pptpctrl.c in PoPToP 1.1.4-b1 through PoPToP 1.1.4

Routine

HIGH 7.2DOWNGRADE

CVE-2003-1455 is a high-severity flaw (CVSS 7.2) affecting pptp server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple buffer overflows in the launch_bcrelay function in pptpctrl.c in PoPToP 1.1.4-b1 through PoPToP 1.1.4-b3 allow local users to execute arbitrary code.

Why this priority

High severity

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

Risk facts

CVSS score	7.2 (High)
EPSS exploit chance	0.4% (top 61%)
CISA exploited list	No
Weakness	CWE-119
Published	2003-12-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: poptop

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

Am I affected?

Timeline

2003-12-31 05:00 UTCPublished CVE record published
2026-06-16 22:04 UTCUpdated Record last modified

poptop pptp server DOWNGRADE

Affected: 1.1.4b1 · 1.1.4b2 · 1.1.4b3

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.1.4b1

1. Check installed version

apt-cache policy pptp-server || rpm -q pptp-server || pptp-server --version

2. No fixed release: DOWNGRADE to a release before 1.1.4b1 (Debian / Ubuntu)

apt-cache madison pptp-server sudo apt install pptp-server=<VERSION_BEFORE_1.1.4b1> sudo apt-mark hold pptp-server

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

dnf --showduplicates list pptp-server sudo dnf downgrade pptp-server-<VERSION_BEFORE_1.1.4b1> sudo dnf versionlock add pptp-server

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-2003-1455?

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

Is CVE-2003-1455 being exploited?

CVE-2003-1455 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-2003-1455 affect?

CVE-2003-1455 affects pptp server. Severity is high (CVSS 7.2). Multiple buffer overflows in the launch_bcrelay function in pptpctrl.c in PoPToP 1.1.4-b1 through PoPToP 1.1.4-b3 allow local users to execute arbitrary code.

How urgent is CVE-2003-1455?

Priority 35/100. High severity

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References

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