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CVE-2020-1503

Microsoft Word Information Disclosure Vulnerability

5.5 Medium

An information disclosure vulnerability exists when Microsoft Word improperly discloses the contents of its memory. An attacker who exploited the vulnerability could use the information to compromise the user’s computer or data. To exploit the vulnerability, an attacker could craft a special document file and then convince the user to open it. An attacker must know the memory address location where the object was created. The update addresses the vulnerability by changing the way certain Word functions handle objects in memory.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
High
Integrity
None
Availability
None

Exploit likelihood

4.55%Unchanged since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 5.5

An information disclosure vulnerability exists when Microsoft Word improperly discloses the contents of its memory. An attacker who exploited the vulnerability could use the information to compromise the user’s computer or data. To exploit the vulnerability, an attacker could craft a special document file and then convince the user to open it. An attacker must know the memory address location where the object was created. The update addresses the vulnerability by changing the way certain Word functions handle objects in memory.

Record
CVE-2020-1503
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CVSS 2.0
4.3 MediumAV:N/AC:M/Au:N/C:P/I:N/A:N
Updated
2026-11-02
CVE List No score

Microsoft Word Information Disclosure Vulnerability

An information disclosure vulnerability exists when Microsoft Word improperly discloses the contents of its memory. An attacker who exploited the vulnerability could use the information to compromise the user’s computer or data. To exploit the vulnerability, an attacker could craft a special document file and then convince the user to open it. An attacker must know the memory address location where the object was created. The update addresses the vulnerability by changing the way certain Word functions handle objects in memory.

Record
CVE-2020-1503
Updated
2026-11-02
EUVDEUVD-2020-12377 No score

An information disclosure vulnerability exists when Microsoft Word improperly discloses the contents of its memory. An attacker who exploited the vulnerability could use the information to compromise the user’s computer or data. To exploit the vulnerability, an attacker could craft a special document file and then convince the user to open it. An attacker must know the memory address location where the object was created. The update addresses the vulnerability by changing the way certain Word functions handle objects in memory.

Record
EUVD-2020-12377
Updated
2026-11-03
GitHub AdvisoriesGHSA-vfx9-2vhh-x45q 5.5

An information disclosure vulnerability exists when Microsoft Word improperly discloses the...

An information disclosure vulnerability exists when Microsoft Word improperly discloses the contents of its memory, aka 'Microsoft Word Information Disclosure Vulnerability'. This CVE ID is unique from CVE-2020-1502, CVE-2020-1583.

Record
GHSA-vfx9-2vhh-x45q
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Weakness
CWE-200
Updated
2026-11-02

Affected products

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History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2020-1503 is a medium vulnerability (CVSS 5.5) in Microsoft Word, published August 17, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 4.55%, the 91st percentile. No source names a fixed version.

References

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