Multiple vulnerabilities in Microsoft Office
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 4 |
| CVE-ID | CVE-2025-24057 CVE-2025-24080 CVE-2025-26629 CVE-2025-24083 |
| CWE-ID | CWE-122 CWE-416 CWE-822 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software |
Microsoft Office Client/Desktop applications / Office applications Microsoft 365 Apps for Enterprise Client/Desktop applications / Office applications Microsoft Office LTSC Client/Desktop applications / Other client software |
| Vendor | Microsoft |
Security Bulletin
This security bulletin contains information about 4 vulnerabilities.
1) Heap-based buffer overflow
EUVDB-ID: #VU105551
Risk: High
CVSSv4.0: 5.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]
CVE-ID: CVE-2025-24057
CWE-ID:
CWE-122 - Heap-based Buffer Overflow
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in Microsoft Office. A remote attacker can trick a victim to open a specially crafted file, trigger a heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsMicrosoft Office: 2016 - 2019
Microsoft Office LTSC: 2021 for Mac - 2024
Microsoft 365 Apps for Enterprise: 32-bit Systems - 64-bit Systems
CPE2.3- cpe:2.3:a:microsoft:microsoft_office:*:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:microsoft_office_ltsc:2021:for Mac:*:*:*:*:*:*
- cpe:2.3:a:microsoft:microsoft_office_ltsc:2021:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:microsoft_office_ltsc:2024:for Mac:*:*:*:*:*:*
- cpe:2.3:a:microsoft:microsoft_365_apps_for_enterprise:32-bit_Systems:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:microsoft_365_apps_for_enterprise:64-bit_Systems:*:*:*:*:*:*:*
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-24057
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to trick the victim to visit a specially crafted website or open a file.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Use-after-free
EUVDB-ID: #VU105554
Risk: High
CVSSv4.0: 5.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]
CVE-ID: CVE-2025-24080
CWE-ID:
CWE-416 - Use After Free
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error in Microsoft Office. A remote attacker can trick a victim to open a specially crafted file and execute arbitrary code on the system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsMicrosoft Office: 2016 - 2019
Microsoft Office LTSC: 2021 - 2024
Microsoft 365 Apps for Enterprise: 32-bit Systems - 64-bit Systems
CPE2.3- cpe:2.3:a:microsoft:microsoft_office_ltsc:2021:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:microsoft_office_ltsc:2024:*:*:*:*:*:*:*
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-24080
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to trick the victim to visit a specially crafted website or open a file.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
3) Use-after-free
EUVDB-ID: #VU105553
Risk: High
CVSSv4.0: 5.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]
CVE-ID: CVE-2025-26629
CWE-ID:
CWE-416 - Use After Free
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error in Microsoft Office. A remote attacker can trick a victim to open a specially crafted file and execute arbitrary code on the target system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsMicrosoft Office LTSC: 2024
Microsoft 365 Apps for Enterprise: 32-bit Systems - 64-bit Systems
CPE2.3 External linkshttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-26629
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to trick the victim to visit a specially crafted website or open a file.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
4) Untrusted Pointer Dereference
EUVDB-ID: #VU105552
Risk: High
CVSSv4.0: 5.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]
CVE-ID: CVE-2025-24083
CWE-ID:
CWE-822 - Untrusted Pointer Dereference
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to untrusted pointer dereference error in Microsoft Office. A remote attacker can trick the victim to open a specially crafted file, trigger pointer dereference and execute arbitrary code on the target system.
Successful exploitation of the vulnerability may allow an attacker to compromise the affected system.
MitigationInstall update from vendor's website.
Vulnerable software versionsMicrosoft Office: 2016 - 2019
Microsoft Office LTSC: 2021 for Mac - 2024
Microsoft 365 Apps for Enterprise: 32-bit Systems - 64-bit Systems
CPE2.3- cpe:2.3:a:microsoft:microsoft_office_ltsc:2021:for Mac:*:*:*:*:*:*
- cpe:2.3:a:microsoft:microsoft_office_ltsc:2021:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:microsoft_office_ltsc:2024:for Mac:*:*:*:*:*:*
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-24083
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to trick the victim to visit a specially crafted website or open a file.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
