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Vulnerabilidades publicadas, com severidade, exploração conhecida e fontes oficiais.
CVE-2026-21807
Baixa · 3.9
CWE-121 26/08/2026
HCL BigFix Quantum Risk Analyzer is affected by a stack-based buffer overflow
HCL BigFix Quantum Risk Analyzer binary lacks several critical, industry-standard hardening protections that could allow an attacker to cause a stack-based buffer overflow.
CVE-2026-68863
Alta · 7.5
CWE-121 26/08/2026
Stack-based Buffer Overflow em Dell Powerprotect One
Dell PowerProtect One, versions 20.1.0.0 and below, contain a Stack-based Buffer Overflow vulnerability. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to Denial of service.
CVE-2026-77658
Alta · 7.8
CWE-121 26/08/2026
Dia: dia: stack buffer overflow in bus object via unvalidated handle count in project files
A stack-based buffer overflow vulnerability exists in the Dia diagram editor when processing Network Bus objects from Dia XML project files.
In objects/network/bus.c, bus_load() reads the number of bus handles from the file attribute "bus_handles" using attribute_num_data() without validating an upper bound:
bus->num_handles = attribute_num_data(attr);
When a bus handle is subsequently moved, bus_handle_moved() allocates two temporary arrays on the stack:
parallel = (real *)g_alloca(num_handles * sizeof(real));
perp = (real *)g_alloca(num_handles * sizeof(real));
Because num_handles is fully attacker-controlled via the project file, sufficiently large values (for example 262144 or higher) cause g_alloca() to consume more stack space than the default thread stack limit (typically 8 MB on Linux), resulting in stack overflow, SIGSEGV, and potential stack frame / return-address corruption.
An attacker can embed a Bus object with an excessive bus_handles count in a malicious .dia file. Exploitation requires the victim to open the file in Dia (file dialog, command line, or file association) and trigger handle manipulation (moving a bus handle), which exercises the vulnerable code path.
The identical g_alloca pattern is present in objects/Misc/tree.c (copied from bus.c) and is likely vulnerable to the same class of attack via Tree objects.
Affected versions: Dia 0.98.0 and earlier versions containing this code; issue confirmed on upstream master as of 2026-08-21.
Upstream report: https://gitlab.gnome.org/GNOME/dia/-/issues/581
CVE-2026-78910
Alta · 8.8
CWE-121 25/08/2026
Stack-based Buffer Overflow em Google Chrome
Buffer overflow in V8 in Google Chrome prior to 152.0.7977.65 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: Medium)
CVE-2026-75421
Média · 4.0
CWE-121 25/08/2026
aria2
aria2 <=1.37.0 has a stack-buffer-underflow vulnerability in the IOFile::getLine() function.
CVE-2026-48417
Alta · 7.8
CWE-121 25/08/2026
Substance3D - Sampler | Stack-based Buffer Overflow (CWE-121)
Substance3D - Sampler is affected by a Stack-based Buffer Overflow vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
CVE-2026-68960
Alta · 8.5
CWE-121 25/08/2026
Stack-based Buffer Overflow em Sky Co.,LTD. SKYSEA Client View
A stack-based buffer overflow vulnerability exists in SKYSEA Client View and SKYMEC IT Manager. If this vulnerability is exploited, an attacker who can log in to a Windows system on which the affected product is installed may be able to execute arbitrary code on another Windows system that has the affected product installed and can receive UDP packets from that system.
CVE-2026-68516
Média · 6.5
CWE-121 24/08/2026
OpenEXR: HTJ2K SIZ image-offset gap stack buffer overflow
OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. From version 3.4.0 through 3.4.13, a crafted HTJ2K-compressed EXR can crash OpenEXR during normal decode. An HTJ2K-compressed EXR whose JPEG 2000 SIZ fields place the first tile outside the visible image can reach invalid tile and codeblock geometry in the vendored OpenJPH AVX2 decoder, causing a stack out-of-bounds write and denial of service. OpenEXR's HTJ2K path validates the decoded codestream dimensions against the EXR chunk size, but it does not reject SIZ image-offset/tile-grid geometry where the first tile does not intersect the image. This issue is fixed in version 3.4.14.
CVE-2026-75368
Alta · 7.5
CWE-121 24/08/2026
A stack overflow in the loadRawData function of SpaceDot AcubeSAT OBC software commit…
A stack overflow in the loadRawData function of SpaceDot AcubeSAT OBC software commit eaf90ec allows attackers to cause a Denial of Service (DoS) via supplying a crafted ECSS TC message.
CVE-2025-36939
Média · 5.7
CWE-121 24/08/2026
Stack-based Buffer Overflow em Google Nest Wifi Router Firmware
Multiple vulnerabilities exist in OpenThread's handling of MLE packets. An authenticated attacker on the same Thread network could send specially crafted packets to cause a denial of service. These issues include triggerable assertion failures and a stack-based buffer overflow.
CVE-2026-76071
Crítica · 9.8
CWE-121 24/08/2026
Netis NC63 V3.0.0.3327 Stack Buffer Overflow via destHost Parameter
Netis NC63 firmware through V3.0.0.3327 contains a stack-based buffer overflow vulnerability that allows unauthenticated remote attackers to overwrite saved stack state by supplying an oversized destHost parameter to the ipFilterList=mod action in netis.cgi. Attackers can exploit widthless sscanf conversions that copy user-supplied input into fixed-size stack buffers before authentication is verified, achieving remote code execution as root due to the Boa web server executing the CGI environment with root privileges.
CVE-2026-76070
Crítica · 9.8
CWE-121 24/08/2026
Netis NC63 V3.0.0.3327 Stack Buffer Overflow via Login Password Parameter
Netis NC63 firmware through V3.0.0.3327 contains a stack-based buffer overflow vulnerability that allows unauthenticated remote attackers to overwrite saved stack state by submitting an oversized Base64-encoded password to the login handler in /bin/netis.cgi. Attackers can exploit the custom Base64 decoder's lack of output length validation against the fixed-size stack buffer to achieve remote code execution with root privileges, as the Boa web server executes the CGI environment as root.
CVE-2026-17250
Alta · 8.5
CWE-121 21/08/2026
Authenticated Remote Code Execution via Stack-Based Buffer Overflow in Firmware Update Handling
A
stack-based buffer overflow vulnerability exists in the firmware update
functionality of TL-MR6400 v7 due to unsafe processing of
attacker-controlled metadata within a firmware image.
Successful
exploitation may allow an authenticated attacker to trigger memory corruption
and execute arbitrary code on the affected device.
CVE-2026-17138
Crítica · 9.8
CWE-121 20/08/2026
Vulnerabilities in IBM AIX and PowerVM VIOS
IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to execute arbitrary code due to a stack-based buffer overflow.
CVE-2026-16945
Alta · 7.8
CWE-121 20/08/2026
Vulnerabilities in IBM AIX and PowerVM VIOS
IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a local attacker to execute arbitrary code due to a stack-based buffer overflow.
CVE-2026-43798
Crítica · 9.8
CWE-121 20/08/2026
Stack-based Buffer Overflow em Apple Swiftnio Ssh
A single crafted SSH message gives an unauthenticated network attacker an out-of-bounds stack write of attacker-controlled length and content against any application built on swift-nio-ssh. This vulnerability is addressed in swift-nio-ssh version 0.14.1.
CVE-2026-63387
Alta · 7.0
CWE-121 20/08/2026
Libevent: Off-by-one stack buffer overflow in dnsname_to_labels via crafted DNS server response
Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent has an off-by-one stack buffer overflow in evdns.c when dnsname_to_labels formats a name-bearing DNS record at the end of the 64 KB stack buffer allocated by evdns_server_request_format_response. The final-label check permits j plus label_len plus one to equal buf_len, after which the terminating null byte is written to buf[buf_len]. A crafted DNS server response containing PTR, CNAME, MX, NS, or SOA data can trigger the one-byte out-of-bounds write and crash or corrupt the process. This issue is fixed in versions 2.1.13 and 2.2.2-alpha.
CVE-2026-18303
Alta · 7.8
CWE-121 20/08/2026
GIMP TIF File Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability
GIMP TIF File Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GIMP. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the parsing of TIF files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-29399.
CVE-2026-18297
Alta · 7.8
CWE-121 20/08/2026
GStreamer OGG File Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability
GStreamer OGG File Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GStreamer. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the parsing of OGG files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-29584.
CVE-2026-76879
Alta · 7.5
CWE-121 19/08/2026
Stack-based Buffer Overflow in Wireshark
C12.22 protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
CVE-2026-18871
Alta · 7.3
CWE-121 19/08/2026
Power System Buffer Overflow
IBM PowerVM Hypervisor FW1120.00, FW1110.00 through FW1110.30, and FW1060.00 through FW1060.80 is affected by a vulnerability in host firmware configuration parsing. An attacker with authenticated service-level access to the service processor can write specially crafted configuration data, causing the host firmware boot stack to crash with possible memory corruption during system initialisation, resulting in an integrity and availability impact to the managed system.
CVE-2026-16911
Alta · 8.8
CWE-121 19/08/2026
Vulnerabilities in IBM AIX and PowerVM VIOS
IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote authenticated attacker to execute arbitrary code due to a stack buffer overflow.
CVE-2026-16885
Crítica · 9.8
CWE-121 19/08/2026
Vulnerabilities in IBM AIX and PowerVM VIOS
IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to execute arbitrary code due to a stack buffer overflow.
CVE-2026-16877
Alta · 8.8
CWE-121 19/08/2026
Vulnerabilities in IBM AIX and PowerVM VIOS
IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote authenticated attacker to execute arbitrary code due to a stack-based buffer overflow.
CVE-2026-16872
Crítica · 9.8
CWE-121 19/08/2026
Vulnerabilities in IBM AIX and PowerVM VIOS
IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to execute arbitrary code due to a stack-based buffer overflow.