CVE-2003-0213
HighPublic exploitctrlpacket.c in PoPToP PPTP server before 1.1.4-b3 allows remote attackers to cause a denial of service via a length field of 0 or 1, which causes a negative value to be fed into a read operation, leading to a buffer overflow.
Published May 12, 2003 · Updated Aug 4, 2026 · Also known as DEBIAN-CVE-2003-0213, DSA-295
Key Facts
Patch immediately- CVE-2003-0213 is a high-severity vulnerability (CVSS 7.5 v2) affecting Pptp Server (Poptop), pptpd (debian).
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 71% probability of exploitation in the next 30 days.
- Fixed versions are available, including pptpd 1.1.2-1.4, pptpd 1.1.4-0.b3.2.
- Brandefense priority: patch immediately, because it is very likely to be exploited soon.
CVSS v2
7.5
AV:N/AC:L/Au:N/C:P/I:P/A:P
EPSS (30-day exploit likelihood)
71%
Higher than 99.3% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2003-0213 brief as a PDF
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Description
ctrlpacket.c in PoPToP PPTP server before 1.1.4-b3 allows remote attackers to cause a denial of service via a length field of 0 or 1, which causes a negative value to be fed into a read operation, leading to a buffer overflow.
Affected Products
17 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Pptp ServerPoptop | 1.0.1, 1.1.2, 1.1.3, 1.1.3_2002-10-09, 1.1.4b1, 1.1.4b2 | n/a |
| pptpddebian | See advisory | 1.1.4-0.b3.2 |
Patched Releases
pptpd
1.1.2-1.4, 1.1.4-0.b3.2
Timeline
Publicly disclosed
May 12, 2003
Last updated
Aug 4, 2026
References
- advisoryhttps://security-tracker.debian.org/tracker/CVE-2003-0213
- patchDSA-295
- patch20030409 PoPToP PPTP server remotely exploitable buffer overflow
- patch7316
- exploitMSF poptop_negative_read.rb
FAQ
Common Questions.
ctrlpacket.c in PoPToP PPTP server before 1.1.4-b3 allows remote attackers to cause a denial of service via a length field of 0 or 1, which causes a negative value to be fed into a read operation, leading to a buffer overflow.
Affected: Pptp Server (Poptop) versions 1.0.1, 1.1.2, 1.1.3, 1.1.3_2002-10-09, 1.1.4b1, 1.1.4b2; pptpd (debian). The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including pptpd 1.1.2-1.4, pptpd 1.1.4-0.b3.2.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.
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