VulnerabilityModified

CVE-2007-0427

Stack-based buffer overflow in Microsoft Help Workshop 4.03.0002 allows user-assisted remote attackers to execute arbitrary code via a help project (.HPJ) file with a long HLP field in the OPTIONS section.

EXPLOIT ×2 ✓HIGH 9.3EPSS 31.4%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 31.4%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.

Description

CVSS 2.0: 9.3 HIGHAV:N/AC:M/Au:N/C:C/I:C/A:C
EPSS: 31.37% probability · 98th percentile
Public exploits: 2 in Exploit-DB · verified · first 17 January 2007
CISA KEV: Not listed
Affected: microsoft/html help workshop
Source: cve@mitre.org

EPSS trend

EPSS 31.4% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Public exploits (2)

Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.

EDB-ID	Title	Type	Published	Verified
EDB-3159 source ↗	Microsoft Help Workshop 4.03.0002 - '.HPJ' Local Buffer Overflowwindows · porkythepig	local	19 January 2007	yes
EDB-3149 source ↗	Microsoft Help Workshop 4.03.0002 - '.cnt' Local Buffer Overflowwindows · porkythepig	local	17 January 2007	yes

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.