Which products and versions are affected by CVE-2010-3972?

Affected: Internet Information Services (Microsoft) versions 7.5. The full list is in the CVE brief.

Is CVE-2010-3972 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-2010-3972 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2010-3972?

Public exploit code is available.

Is there a fix for CVE-2010-3972?

No fixed version is listed yet; check the vendor advisory for mitigations.

How urgently should CVE-2010-3972 be patched?

Brandefense priority: patch immediately, because it is very likely to be exploited soon.

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Vulnerability Intelligence

CVE-2010-3972

CriticalPublic exploit

Published Dec 23, 2010 · Updated Apr 28, 2026

Key Facts

Patch immediately

CVE-2010-3972 is a critical-severity vulnerability (CVSS 10.0 v2) affecting Internet Information Services (Microsoft).
It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
EPSS estimates a 95% probability of exploitation in the next 30 days.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

CVSS v2

10.0

AV:N/AC:L/Au:N/C:C/I:C/A:C

EPSS (30-day exploit likelihood)

95%

Higher than 99.8% 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-2010-3972 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

Heap-based buffer overflow in the TELNET_STREAM_CONTEXT::OnSendData function in ftpsvc.dll in Microsoft FTP Service 7.0 and 7.5 for Internet Information Services (IIS) 7.0, and IIS 7.5, allows remote attackers to execute arbitrary code or cause a denial of service (daemon crash) via a crafted FTP command, aka "IIS FTP Service Heap Buffer Overrun Vulnerability." NOTE: some of these details are obtained from third party information.

Affected Products

1 affected entries in total

Product	Affected versions	Fixed in
Internet Information ServicesMicrosoft	7.5	n/a

Timeline

Publicly disclosed
Dec 23, 2010
Last updated
Apr 28, 2026

Weakness Type

CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

advisory42713
advisoryADV-2010-3305
exploitExploitDB-15803
exploit15803
exploit45542

6 more references in the full CVE brief

FAQ

Common Questions.

Heap-based buffer overflow in the TELNET_STREAM_CONTEXT::OnSendData function in ftpsvc.dll in Microsoft FTP Service 7.0 and 7.5 for Internet Information Services (IIS) 7.0, and IIS 7.5, allows remote attackers to execute arbitrary code or cause a denial of service (daemon crash) via a crafted FTP command, aka "IIS FTP…
Affected: Internet Information Services (Microsoft) versions 7.5. 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.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

Is CVE-2010-3972 Running On Your Attack Surface?

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