ip_nat_pptp in the PPTP NAT helper (netfilter/ip_nat_helper_pptp.c) in Linux kernel 2.6.14, and other versions, allows local users to cause a denial of service (memory corruption or crash) via a crafted outbound packet that causes an incorrect offset to be calculated from pointer arithmetic when non-linear SKBs (socket buffers) are used.
CVE-2006-0037
This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 4.9 — v2 rates that MEDIUM (v2 bands: LOW 0.0–3.9 / MEDIUM 4.0–6.9 / HIGH 7.0–10.0; v2 has no CRITICAL band). Vector AV:L/AC:L/Au:N/C:N/I:N/A:C. CVSS v2 is an older, coarser metric than v3.1/v4.0 (no Scope, no User Interaction, no Attack Requirements), so it is not directly comparable to a v3 or v4 score. NVD has never re-scored this record under v3. EPSS predicts 0.4% exploitation probability in the next 30 days, which is reflected in EG Risk but does not lift the v2 base. Confidence: LOW.
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v2.0 (legacy)
- 4.9MEDIUMNVD never assigned a CVSS v3 rating to this CVE
- EG Score
- 4.9(low)
- EG Risk
- 27(Track)EG Risk 27/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity49% × 45%Exploitation0% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 0%
- EPSS %ILE
- 30%
- KEV
- Not listed
Published
January 23, 2006
Last Modified
April 16, 2026
References (14)
- secalert@redhathttp://kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=03b9feca89366952ae5dfe4ad8107b1ece50b710
- secalert@redhathttp://secunia.com/advisories/18482
- secalert@redhathttp://securityreason.com/securityalert/388
- secalert@redhathttp://www.securityfocus.com/bid/16414
- secalert@redhathttp://www.trustix.org/errata/2006/0004
- secalert@redhathttp://www.vupen.com/english/advisories/2006/0220
- secalert@redhathttps://exchange.xforce.ibmcloud.com/vulnerabilities/24204
- af854a3a-2127-422b-91ae-364da2661108http://kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=03b9feca89366952ae5dfe4ad8107b1ece50b710
- af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/18482
- af854a3a-2127-422b-91ae-364da2661108http://securityreason.com/securityalert/388
- af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/16414
- af854a3a-2127-422b-91ae-364da2661108http://www.trustix.org/errata/2006/0004
- af854a3a-2127-422b-91ae-364da2661108http://www.vupen.com/english/advisories/2006/0220
- af854a3a-2127-422b-91ae-364da2661108https://exchange.xforce.ibmcloud.com/vulnerabilities/24204
Data Freshness Timeline
(refreshed 3× in last 7d / 4× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-09-10 09:23 UTCEPSS rescore
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- 2026-07-26 13:27 UTCEG score recompute▲ 4.90
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- 2026-07-23 00:49 UTCEG score recompute
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- 2026-07-20 17:02 UTCEPSS rescore
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- 2026-05-31 10:17 UTCEG score recompute
- 2026-05-31 10:17 UTCGHSA enrichment
- 2026-05-31 00:13 UTCEPSS rescore
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Frequently asked(4)
What is CVE-2006-0037?
When was CVE-2006-0037 disclosed?
Is CVE-2006-0037 actively exploited?
How do I remediate CVE-2006-0037?
Dependency Blast Radius
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