Common Weakness Enumeration
CWE-908
AllowedUse of Uninitialized Resource
Abstraction: Base · Status: Incomplete
The product uses or accesses a resource that has not been initialized.
963 vulnerabilities reference this CWE, most recent first.
CVE-2026-94056 (GCVE-0-2026-94056)
Vulnerability from cvelistv5 – Published: 2026-09-19 22:52 – Updated: 2026-09-21 18:32
VLAI
EPSS
VEX
Summary
Exim before 4.100.1, when Proxy-Protocol is used with an attacker-controlled proxy, allows attackers to read certain uninitialized data from stack memory.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-21 18:32 UTC
CWE
- CWE-908 - Use of Uninitialized Resource
Assigner
References
1 reference
Impacted products
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CVE-2026-93018 (GCVE-0-2026-93018)
Vulnerability from cvelistv5 – Published: 2026-09-18 13:57 – Updated: 2026-09-18 17:06
VLAI
EPSS
VEX
Title
Imager versions before 1.036 for Perl disclose uninitialised heap memory reading a paletted image with pixel indexes past its colour map in i_gpix_p and i_glin_p
Summary
Imager versions before 1.036 for Perl disclose uninitialised heap memory reading a paletted image with pixel indexes past its colour map in i_gpix_p and i_glin_p.
The palette is allocated uninitialised, and only the entries a reader adds count as populated. The TGA reader stores pixel indexes without checking them against the colour map. i_gpix_p() rejects only an index greater than the count, so an index equal to it reads the first unpopulated entry, and getpixel() returns it.
i_glin_p() skips any index at or beyond the count without writing that pixel to the caller's buffer. The palette-to-RGB conversion reads each row through an uninitialised buffer, so those pixels of the converted image hold prior heap contents.
Reading an attacker-supplied image through Imager->read() and then fetching its pixels or converting it to RGB discloses process heap memory.
Severity
No CVSS data available.
Assigner
References
4 references
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CVE-2026-91946 (GCVE-0-2026-91946)
Vulnerability from cvelistv5 – Published: 2026-09-15 15:18 – Updated: 2026-09-21 19:03
VLAI
EPSS
VEX
Title
FreeRDP before 3.31.0 Information Disclosure via RDPGFX ResetGraphics
Summary
FreeRDP versions before 3.31.0 contain an information disclosure vulnerability in the RDPGFX server's ResetGraphics PDU serializer that fails to initialize padding bytes in the fixed 340-byte wire format. Attackers can receive uninitialized heap memory including live pointers and GLib function addresses transmitted in the PDU, defeating heap ASLR and disclosing the GLib module base address.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-21 19:03 UTC
CWE
- CWE-908 - Use of Uninitialized Resource
Assigner
References
3 references
| URL | Tags |
|---|---|
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| https://github.com/FreeRDP/FreeRDP/commit/483c938… | patch |
| https://www.vulncheck.com/advisories/freerdp-befo… | third-party-advisory |
Impacted products
Date Public
2026-08-31 00:00
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CVE-2026-85880 (GCVE-0-2026-85880)
Vulnerability from cvelistv5 – Published: 2026-09-08 17:14 – Updated: 2026-09-21 16:02
VLAI
EPSS
VEX
Title
Windows Advanced Local Procedure Call (ALPC) Elevation of Privilege Vulnerability
Summary
Heap-based buffer overflow in Windows ALPC allows an authorized attacker to elevate privileges locally.
Severity
SSVC
Exploitation: active
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 00:00 UTC
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
13 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Windows 10 Version 1607 |
Affected:
10.0.14393.0 , < 10.0.14393.9512
(custom)
|
|
| Microsoft | Windows 10 Version 1809 |
Affected:
10.0.17763.0 , < 10.0.17763.9245
(custom)
|
|
| Microsoft | Windows 10 Version 21H2 |
Affected:
10.0.19044.0 , < 10.0.19044.7725
(custom)
|
|
| Microsoft | Windows 10 Version 22H2 |
Affected:
10.0.19045.0 , < 10.0.19045.7725
(custom)
|
|
| Microsoft | Windows Server 2012 |
Affected:
6.2.9200.0 , < 6.2.9200.26349
(custom)
|
|
| Microsoft | Windows Server 2012 (Server Core installation) |
Affected:
6.2.9200.0 , < 6.2.9200.26349
(custom)
|
|
| Microsoft | Windows Server 2012 R2 |
Affected:
6.3.9600.0 , < 6.3.9600.23397
(custom)
|
|
| Microsoft | Windows Server 2012 R2 (Server Core installation) |
Affected:
6.3.9600.0 , < 6.3.9600.23397
(custom)
|
|
| Microsoft | Windows Server 2016 |
Affected:
10.0.14393.0 , < 10.0.14393.9512
(custom)
|
|
| Microsoft | Windows Server 2016 (Server Core installation) |
Affected:
10.0.14393.0 , < 10.0.14393.9512
(custom)
|
|
| Microsoft | Windows Server 2019 |
Affected:
10.0.17763.0 , < 10.0.17763.9245
(custom)
|
|
| Microsoft | Windows Server 2019 (Server Core installation) |
Affected:
10.0.17763.0 , < 10.0.17763.9245
(custom)
|
|
| Microsoft | Windows Server 2022 |
Affected:
10.0.20348.0 , < 10.0.20348.5622
(custom)
|
Date Public
2026-09-08 14:00
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CVE-2026-85089 (GCVE-0-2026-85089)
Vulnerability from cvelistv5 – Published: 2026-09-03 01:04 – Updated: 2026-09-03 13:58
VLAI
EPSS
VEX
Title
FreeRDP before 3.31.0 Information Disclosure via uninitialized heap memory
Summary
FreeRDP versions 3.0.0 through 3.30.0 (before 3.31.0) transmit uninitialized heap memory in Save Session Info PDU reserved padding fields. Three PDU writers in libfreerdp/core/info.c (rdp_write_logon_info_v2, rdp_write_logon_info_plain, and rdp_write_logon_info_ex) use Stream_Seek instead of Stream_Zero for reserved pad bytes (up to 576 bytes), leaving previously freed heap contents in the outgoing PDU. Because the send buffer is allocated with malloc (not zeroed), stale heap data — which may include cleartext credentials from prior sessions — can be sent to the receiving peer. FreeRDP-based servers using rdpUpdate::SaveSessionInfo and freerdp-proxy (which forwards these PDUs) are affected, allowing disclosure of server/proxy process memory to a downstream client.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-03 13:58 UTC
CWE
- CWE-908 - Use of Uninitialized Resource
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://github.com/FreeRDP/FreeRDP/security/advis… | vendor-advisory |
| https://github.com/FreeRDP/FreeRDP/commit/056cede… | patch |
| https://github.com/FreeRDP/FreeRDP/commit/483c938… | patch |
| https://github.com/FreeRDP/FreeRDP/releases/tag/3.31.0 | release-notes |
| https://github.com/FreeRDP/FreeRDP/blob/3.30.0/li… | technical-description |
| https://github.com/FreeRDP/FreeRDP | product |
| https://www.vulncheck.com/advisories/freerdp-befo… | third-party-advisory |
Impacted products
Date Public
2026-08-13 00:00
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CVE-2026-84267 (GCVE-0-2026-84267)
Vulnerability from cvelistv5 – Published: 2026-09-01 15:19 – Updated: 2026-09-02 13:06
VLAI
EPSS
VEX
Title
Gvfs: sftp: uninitialized heap disclosure in read_string()
Summary
A flaw was found in the SFTP backend in gvfs. When mounting a share, a malicious SFTP server can cause read_string() to allocate a buffer with a certain length but the function does not verify that the buffer is completely filled, leaving the remainder of the buffer containing uninitialized heap contents. If the server sends a short FXP_HANDLE reply, these uninitialized bytes are taken as the file handle. The client will then echo these uninitialized bytes back to the server on all subsequent requests using that handle. With a length of 128 bytes, this issue allows the malicious server to deterministically read uninitialized heap memory from the gvfsd-sftp process, leaking its heap base and the load address of the libgio library, resulting in a deterministic defeat of Address Space Layout Randomization (ASLR).
Severity
4.3 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-01 15:50 UTC
CWE
- CWE-908 - Use of Uninitialized Resource
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-84267 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2526466 | issue-trackingx_refsource_REDHAT |
| https://gitlab.gnome.org/GNOME/gvfs/-/issues/861 |
Impacted products
6 products
| Vendor | Product | Version | |
|---|---|---|---|
| GNOME | gvfs |
Affected:
1.10.0 , < 1.60.2
(semver)
|
|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10
|
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6
|
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7
|
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8
|
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9
|
Date Public
2026-08-03 00:00
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CVE-2026-81958 (GCVE-0-2026-81958)
Vulnerability from cvelistv5 – Published: 2026-09-08 17:18 – Updated: 2026-09-21 16:07
VLAI
EPSS
VEX
Title
Microsoft Excel Information Disclosure Vulnerability
Summary
Use of uninitialized resource in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 19:41 UTC
CWE
- CWE-908 - Use of Uninitialized Resource
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
9 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft 365 Apps for Enterprise |
Affected:
16.0.1 , < 16.0.20326.20138
(custom)
|
|
| Microsoft | Microsoft Excel 2016 |
Affected:
16.0.0.0 , < 16.0.5569.1003
(custom)
|
|
| Microsoft | Microsoft Office 2016 |
Affected:
16.0.0 , < 16.0.5569.1003
(custom)
|
|
| Microsoft | Microsoft Office 2019 |
Affected:
19.0.0 , < 16.0.10417.20207
(custom)
|
|
| Microsoft | Microsoft Office 365 for Mac |
Affected:
1.0.0 , < 16.113.26091433
(custom)
|
|
| Microsoft | Microsoft Office LTSC 2021 |
Affected:
16.0.1 , < 16.0.14334.20906
(custom)
|
|
| Microsoft | Microsoft Office LTSC 2024 |
Affected:
16.0.0 , < 16.0.17932.20976
(custom)
|
|
| Microsoft | Microsoft Office LTSC for Mac 2021 |
Affected:
16.0.1 , < 16.113.26091433
(custom)
|
|
| Microsoft | Microsoft Office LTSC for Mac 2024 |
Affected:
16.0.0 , < 16.113.26091433
(custom)
|
Date Public
2026-09-08 14:00
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CVE-2026-81391 (GCVE-0-2026-81391)
Vulnerability from cvelistv5 – Published: 2026-09-08 17:18 – Updated: 2026-09-21 16:07
VLAI
EPSS
VEX
Title
Microsoft Excel Information Disclosure Vulnerability
Summary
Use of uninitialized resource in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 19:41 UTC
CWE
- CWE-908 - Use of Uninitialized Resource
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
9 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft 365 Apps for Enterprise |
Affected:
16.0.1 , < 16.0.20326.20138
(custom)
|
|
| Microsoft | Microsoft Excel 2016 |
Affected:
16.0.0.0 , < 16.0.5569.1003
(custom)
|
|
| Microsoft | Microsoft Office 2016 |
Affected:
16.0.0 , < 16.0.5569.1003
(custom)
|
|
| Microsoft | Microsoft Office 2019 |
Affected:
19.0.0 , < 16.0.10417.20207
(custom)
|
|
| Microsoft | Microsoft Office 365 for Mac |
Affected:
1.0.0 , < 16.113.26091433
(custom)
|
|
| Microsoft | Microsoft Office LTSC 2021 |
Affected:
16.0.1 , < 16.0.14334.20906
(custom)
|
|
| Microsoft | Microsoft Office LTSC 2024 |
Affected:
16.0.0 , < 16.0.17932.20976
(custom)
|
|
| Microsoft | Microsoft Office LTSC for Mac 2021 |
Affected:
16.0.1 , < 16.113.26091433
(custom)
|
|
| Microsoft | Microsoft Office LTSC for Mac 2024 |
Affected:
16.0.0 , < 16.113.26091433
(custom)
|
Date Public
2026-09-08 14:00
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CVE-2026-80091 (GCVE-0-2026-80091)
Vulnerability from cvelistv5 – Published: 2026-09-08 17:18 – Updated: 2026-09-21 16:07
VLAI
EPSS
VEX
Title
Microsoft Office Information Disclosure Vulnerability
Summary
Use of uninitialized resource in Microsoft Office allows an unauthorized attacker to disclose information over a network.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 19:42 UTC
CWE
- CWE-908 - Use of Uninitialized Resource
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
8 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft 365 Apps for Enterprise |
Affected:
16.0.1 , < 16.0.20326.20138
(custom)
|
|
| Microsoft | Microsoft Office 2016 |
Affected:
16.0.0 , < 16.0.5569.1000
(custom)
|
|
| Microsoft | Microsoft Office 2019 |
Affected:
19.0.0 , < 16.0.10417.20207
(custom)
|
|
| Microsoft | Microsoft Office 365 for Mac |
Affected:
1.0.0 , < 16.113.26091433
(custom)
|
|
| Microsoft | Microsoft Office LTSC 2021 |
Affected:
16.0.1 , < 16.0.14334.20906
(custom)
|
|
| Microsoft | Microsoft Office LTSC 2024 |
Affected:
16.0.0 , < 16.0.17932.20976
(custom)
|
|
| Microsoft | Microsoft Office LTSC for Mac 2021 |
Affected:
16.0.1 , < 16.113.26091433
(custom)
|
|
| Microsoft | Microsoft Office LTSC for Mac 2024 |
Affected:
16.0.0 , < 16.113.26091433
(custom)
|
Date Public
2026-09-08 14:00
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CVE-2026-78519 (GCVE-0-2026-78519)
Vulnerability from cvelistv5 – Published: 2026-09-08 17:18 – Updated: 2026-09-21 16:07
VLAI
EPSS
VEX
Title
Microsoft Office Outlook Remote Code Execution Vulnerability
Summary
Use of uninitialized resource in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-09 04:21 UTC
CWE
- CWE-908 - Use of Uninitialized Resource
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
5 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft 365 Apps for Enterprise |
Affected:
16.0.1 , < 16.0.20326.20138
(custom)
|
|
| Microsoft | Microsoft Office 2019 |
Affected:
19.0.0 , < 16.0.10417.20207
(custom)
|
|
| Microsoft | Microsoft Office LTSC 2021 |
Affected:
16.0.1 , < 16.0.14334.20906
(custom)
|
|
| Microsoft | Microsoft Office LTSC 2024 |
Affected:
16.0.0 , < 16.0.17932.20976
(custom)
|
|
| Microsoft | Microsoft Outlook 2016 |
Affected:
16.0.0.0 , < 16.0.5569.1000
(custom)
|
Date Public
2026-09-08 14:00
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Mitigation
Implementation
Explicitly initialize the resource before use. If this is performed through an API function or standard procedure, follow all required steps.
Mitigation
Implementation
Pay close attention to complex conditionals that affect initialization, since some branches might not perform the initialization.
Mitigation
Implementation
Avoid race conditions (CWE-362) during initialization routines.
Mitigation
Build and Compilation
Run or compile the product with settings that generate warnings about uninitialized variables or data.
No CAPEC attack patterns related to this CWE.