Common Weakness Enumeration

CWE-193

Off-by-one Error

A product calculates or uses an incorrect maximum or minimum value that is 1 more, or 1 less, than the correct value.

CVE-2026-58374 (GCVE-0-2026-58374)

Vulnerability from cvelistv5 – Published: 2026-06-30 12:35 – Updated: 2026-06-30 13:38
VLAI
Summary
In hostapd before 2.12, a missing bounds check in AP-mode Wi-Fi 7 (IEEE 802.11be) Multi-Link Operation (MLO) association request processing allows an unauthenticated attacker within wireless range to send a crafted management frame containing a malformed Multi-Link Element or Per-STA Profile subelement. In hostapd_process_ml_assoc_req() in src/ap/ieee802_11_eht.c, the received link_id field can be parsed as value 15, but the corresponding links[] storage only has valid entries for lower link IDs (0 through 14). This causes an out-of-bounds write / small memory corruption during association processing before the 4-way handshake. The attack does not require network credentials, prior authentication, or user interaction. The confirmed practical impact is denial of service through hostapd process termination. This affects hostapd v2.11 and newer development snapshots before v2.12 when built with CONFIG_IEEE80211BE enabled. The issue is fixed in hostapd v2.12 and the upstream 2026-1 fixes.
Severity
6.5 (Medium)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
w1.fi hostapd Affected: 0 , < 2.12 (custom)
Create a notification for this product.
Show details on NVD website
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CVE-2026-58380 (GCVE-0-2026-58380)

Vulnerability from cvelistv5 – Published: 2026-07-06 13:58 – Updated: 2026-07-06 15:41
VLAI
Title
Gimp: gimp: stack buffer overflow in pnmscanner_gettoken()
Summary
A flaw was found in GIMP's PNM file format parser. When parsing a specially crafted PNM file, the pnmscanner_gettoken() function writes a null terminator one byte past the end of a stack-allocated buffer due to an off-by-one error in the loop boundary check. This could lead to memory corruption, potentially resulting in denial of service or arbitrary code execution.
Severity
7.3 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Date Public
2026-04-11 00:00
Credits
Red Hat would like to thank bb1abu for reporting this issue.
Show details on NVD website
To clipboard 

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CVE-2026-6861 (GCVE-0-2026-6861)

Vulnerability from cvelistv5 – Published: 2026-04-22 13:39 – Updated: 2026-04-22 15:59
VLAI
Title
Emacs: emacs: memory corruption vulnerability when processing svg css
Summary
A flaw was found in GNU Emacs. This vulnerability, a memory corruption issue, occurs when Emacs processes specially crafted SVG (Scalable Vector Graphics) CSS (Cascading Style Sheets) data. A local user could exploit this by convincing a victim to open a malicious SVG file, which may lead to a denial of service (DoS) or potentially information disclosure.
Severity
6.1 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
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https://bugzilla.redhat.com/show_bug.cgi?id=2459992 issue-trackingx_refsource_REDHAT
Impacted products
Date Public
2026-04-19 00:00
Credits
Red Hat would like to thank Gaetano Zappulla (Tinexta Defence SpA) for reporting this issue.
Show details on NVD website
To clipboard 

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CVE-2026-7572 (GCVE-0-2026-7572)

Vulnerability from cvelistv5 – Published: 2026-05-06 02:38 – Updated: 2026-05-06 16:42
VLAI
Title
Velociraptor EVTX Parser — Process Crash via Crafted .evtx File
Summary
An off-by-one error (CWE-193) in the ConsumeUnit16Array and ConsumeUnit64Array functions in Velocidex Velociraptor before version 0.76.5 on Windows and Linux allows a local attacker to cause a Denial of Service (DoS) via a process crash by providing a specially crafted .evtx file to the parse_evtx VQL plugin.
Severity
4.4 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
Velocidex velociraptor Affected: 0 , < 0.76.5 (semver)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-7831 (GCVE-0-2026-7831)

Vulnerability from cvelistv5 – Published: 2026-07-01 03:33 – Updated: 2026-07-09 04:35
VLAI
Title
UltraVNC viewer off-by-one stack overflow in ServerInit desktop name parsing
Summary
UltraVNC viewer through 1.8.2.2 contains an off-by-one stack buffer overflow in the RFB ServerInit message handler. In vncviewer/ClientConnection.cpp, when the server-supplied nameLength equals exactly 2024 the code declares a 2024-byte stack buffer _dn[2024] and calls ReadString(_dn, 2024). ReadString writes the NUL terminator at buf[length], i.e., _dn[2024], one byte past the end of the stack buffer. A malicious VNC server can trigger this condition by advertising a desktop name of length 2024 in its ServerInit message. On release builds without stack canaries the single-byte NUL overwrite adjacent stack data. On builds with /GS stack protection the canary is corrupted and the process terminates, resulting in denial of service. User interaction (connecting the viewer to the malicious server) is required.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
uvnc UltraVNC Affected: 0 , ≤ 1.8.2.2 (custom)
Create a notification for this product.
Credits
Arjun Basnet, Securin (arjun.basnet@securin.io)
Show details on NVD website
To clipboard 

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CVE-2026-8357 (GCVE-0-2026-8357)

Vulnerability from cvelistv5 – Published: 2026-06-15 16:23 – Updated: 2026-07-09 12:09
VLAI
Title
Heap buffer overflow in Calc formula compilation
Summary
LibreOffice Calc compiles cell formulas when opening a spreadsheet. A heap buffer overflow existed when compiling a very long formula made up of many opening tokens. The array that tracks nesting depth was allocated one element too small for that worst case, so such a formula wrote one element past its end. In fixed versions the array is sized to hold the largest possible nesting.
Severity
5.4 (Medium)
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:P
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-787 - Out-of-bounds Write
  • CWE-193 - Off-by-one Error
  • CWE-131 - Incorrect Calculation of Buffer Size
Assigner
References
Impacted products
Date Public
2026-06-15 00:00
Credits
Anthropic (automated discovery using Claude) Arthur Chan of Ada Logics (validation and reporting)
Show details on NVD website
To clipboard 

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Mitigation

Phase: Implementation

Description:

  • When copying character arrays or using character manipulation methods, the correct size parameter must be used to account for the null terminator that needs to be added at the end of the array. Some examples of functions susceptible to this weakness in C include strcpy(), strncpy(), strcat(), strncat(), printf(), sprintf(), scanf() and sscanf().

No CAPEC attack patterns related to this CWE.

Back to CWE stats page