CWE-191

Integer Underflow (Wrap or Wraparound)

The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result.

CVE-2026-22185 (GCVE-0-2026-22185)

Vulnerability from cvelistv5 – Published: 2026-01-07 20:26 – Updated: 2026-05-25 23:41
VLAI
Title
OpenLDAP LMDB mdb_load Heap Buffer Underflow in readline()
Summary
OpenLDAP Lightning Memory-Mapped Database (LMDB) versions up to and including 0.9.14, prior to commit 8e1fda8, contain a heap buffer underflow in the readline() function of mdb_load. When processing malformed input containing an embedded NUL byte, an unsigned offset calculation can underflow and cause an out-of-bounds read of one byte before the allocated heap buffer. This can cause mdb_load to crash, leading to a limited denial-of-service condition.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-125 - Out-of-bounds Read
  • CWE-191 - Integer Underflow (Wrap or Wraparound)
Assigner
References
Impacted products
Vendor Product Version
OpenLDAP Foundation OpenLDAP Affected: 0.9.14 , < 0.9.34 (semver)
Create a notification for this product.
Credits
Ron Edgerson
Show details on NVD website

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CVE-2026-2369 (GCVE-0-2026-2369)

Vulnerability from cvelistv5 – Published: 2026-03-19 14:20 – Updated: 2026-04-28 21:34
VLAI
Title
Libsoup: libsoup: buffer overread due to integer underflow when handling zero-length resources
Summary
A flaw was found in libsoup. An integer underflow vulnerability occurs when processing content with a zero-length resource, leading to a buffer overread. This can allow an attacker to potentially access sensitive information or cause an application level denial of service.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-191 - Integer Underflow (Wrap or Wraparound)
Assigner
Impacted products
Date Public
2026-02-11 11:11
Credits
Red Hat would like to thank Eric Su and Samuel Dainard for reporting this issue.
Show details on NVD website

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CVE-2026-23748 (GCVE-0-2026-23748)

Vulnerability from cvelistv5 – Published: 2026-02-26 17:31 – Updated: 2026-05-26 11:52
VLAI
Title
Golioth Firmware SDK < 0.22.0 LightDB State Out-of-Bounds Read
Summary
Golioth Firmware SDK version 0.10.0 prior to 0.22.0, fixed in commit d7f55b38, contain an out-of-bounds read in LightDB State string parsing. When processing a string payload, a payload_size value less than 2 can cause a size_t underflow when computing the number of bytes to copy (nbytes). The subsequent memcpy() reads past the end of the network buffer, which can crash the device. The condition is reachable from on_payload, and golioth_payload_is_null() does not block payload_size==1. A malicious server or MITM can trigger a denial of service.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-191 - Integer Underflow (Wrap or Wraparound)
Assigner
Impacted products
Vendor Product Version
Golioth Firmware SDK Affected: 0.10.0 , < 0.22.0 (semver)
Unaffected: d7f55b380d8be8b29bd101ce06e421af2e88c12b (git)
Create a notification for this product.
Credits
SecMate (https://secmate.dev)
Show details on NVD website

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CVE-2026-23951 (GCVE-0-2026-23951)

Vulnerability from cvelistv5 – Published: 2026-01-22 00:17 – Updated: 2026-01-22 21:44
VLAI
Title
SumatraPDF's Integer Underflow in PalmDbReader Leads to Crash
Summary
SumatraPDF is a multi-format reader for Windows. All versions contain an off-by-one error in the validation code that only triggers with exactly 2 records, causing an integer underflow in the size calculation. This bug exists in PalmDbReader::GetRecord when opening a crafted Mobi file, resulting in an out-of-bounds heap read that crashes the app. There are no published fixes at the time of publication.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-125 - Out-of-bounds Read
  • CWE-191 - Integer Underflow (Wrap or Wraparound)
Assigner
References
Impacted products
Vendor Product Version
sumatrapdfreader sumatrapdf Affected: <= 3.5.2rel
Create a notification for this product.
Show details on NVD website

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CVE-2026-25075 (GCVE-0-2026-25075)

Vulnerability from cvelistv5 – Published: 2026-03-23 18:33 – Updated: 2026-05-06 14:41
VLAI
Title
strongSwan 4.5.0 < 6.0.5 EAP-TTLS AVP Parsing Integer Underflow
Summary
strongSwan versions 4.5.0 prior to 6.0.5 contain an integer underflow vulnerability in the EAP-TTLS AVP parser that allows unauthenticated remote attackers to cause a denial of service by sending crafted AVP data with invalid length fields during IKEv2 authentication. Attackers can exploit the failure to validate AVP length fields before subtraction to trigger excessive memory allocation or NULL pointer dereference, crashing the charon IKE daemon.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-191 - Integer Underflow (Wrap or Wraparound)
  • CWE-476 - NULL Pointer Dereference (CWE-476)
Assigner
Impacted products
Vendor Product Version
strongSwan strongSwan Affected: 4.5.0 , < 6.0.5 (semver)
Create a notification for this product.
Date Public
2026-03-23 00:00
Credits
Kazuma Matsumoto, a security researcher at GMO Cybersecurity by IERAE, Inc. VulnCheck
Show details on NVD website

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CVE-2026-25104 (GCVE-0-2026-25104)

Vulnerability from cvelistv5 – Published: 2026-05-26 08:41 – Updated: 2026-05-26 12:27
VLAI
Summary
MediaArea MediaInfoLib LXF parsing heap-based buffer overflow vulnerability
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-191 - Integer Underflow (Wrap or Wraparound)
Assigner
Impacted products
Credits
Discovered by Dimitrios Tatsis of Cisco TALOS
Show details on NVD website

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CVE-2026-25532 (GCVE-0-2026-25532)

Vulnerability from cvelistv5 – Published: 2026-02-04 17:58 – Updated: 2026-02-04 19:24
VLAI
Title
ESF-IDF is Vulnerable to WPS Enrollee Fragment Integer Underflow
Summary
ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. In versions 5.5.2, 5.4.3, 5.3.4, 5.2.6, and 5.1.6, a vulnerability exists in the WPS (Wi-Fi Protected Setup) Enrollee implementation where malformed EAP-WSC packets with truncated payloads can cause integer underflow during fragment length calculation. When processing EAP-Expanded (WSC) messages, the code computes frag_len by subtracting header sizes from the total packet length. If an attacker sends a packet where the EAP Length field covers only the header and flags but omits the expected payload (such as the 2-byte Message Length field when WPS_MSG_FLAG_LEN is set), frag_len becomes negative. This negative value is then implicitly cast to size_t when passed to wpabuf_put_data(), resulting in a very large unsigned value. This issue has been patched in versions 5.5.3, 5.4.4, 5.3.5, 5.2.7, and 5.1.7.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-191 - Integer Underflow (Wrap or Wraparound)
Assigner
Impacted products
Vendor Product Version
espressif esp-idf Affected: = 5.5.2
Affected: = 5.4.3
Affected: = 5.3.4
Affected: = 5.2.6
Affected: = 5.1.6
Create a notification for this product.
Show details on NVD website

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CVE-2026-25772 (GCVE-0-2026-25772)

Vulnerability from cvelistv5 – Published: 2026-03-17 18:11 – Updated: 2026-03-17 18:55
VLAI
Title
Wazuh Database Synchronization Vulnerable to Stack-based Buffer Overflow via snprintf Integer Underflow
Summary
Wazuh is a free and open source platform used for threat prevention, detection, and response. Starting in version 4.4.0 and prior to version 4.14.3, a stack-based buffer overflow vulnerability exists in the Wazuh Database synchronization module (`wdb_delta_event.c`). The SQL query construction logic allows for an integer underflow when calculating the remaining buffer size. This occurs because the code incorrectly aggregates the return value of `snprintf`. If a specific database synchronization payload exceeds the size of the query buffer (2048 bytes), the size calculation wraps around to a massive integer, effectively removing bounds checking for subsequent writes. This allows an attacker to corrupt the stack, leading to a Denial of Service (DoS) or potentially RCE. Version 4.14.3 fixes the issue.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-121 - Stack-based Buffer Overflow
  • CWE-191 - Integer Underflow (Wrap or Wraparound)
Assigner
References
Impacted products
Vendor Product Version
wazuh wazuh Affected: >= 4.4.0, < 4.14.3
Create a notification for this product.
Show details on NVD website

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CVE-2026-26204 (GCVE-0-2026-26204)

Vulnerability from cvelistv5 – Published: 2026-04-29 17:43 – Updated: 2026-04-30 12:48
VLAI
Title
Wazuh: Heap-based NULL WRITE Buffer Underflow in GetAlertData
Summary
Wazuh is a free and open source platform used for threat prevention, detection, and response. From version 1.0.0 to before version 4.14.4, a heap-based out-of-bounds WRITE occurs in GetAlertData, resulting in writing a NULL byte exactly 1 byte before the start of the buffer allocated by strdup. Due to unsigned integer underflow and pointer arithmetic wrapping, the write lands at offset -1 from the buffer, corrupting heap metadata. A malicious actor can potentially leverage this issue through a compromised agent to cause denial of service or heap corruption by injecting a specially crafted alert into the alerts log file monitored by wazuh-logcollector. This issue has been patched in version 4.14.4.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-124 - Buffer Underwrite ('Buffer Underflow')
  • CWE-191 - Integer Underflow (Wrap or Wraparound)
Assigner
References
Impacted products
Vendor Product Version
wazuh wazuh Affected: >= 1.0.0, < 4.14.4
Create a notification for this product.
Show details on NVD website

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CVE-2026-27296 (GCVE-0-2026-27296)

Vulnerability from cvelistv5 – Published: 2026-04-14 22:58 – Updated: 2026-04-15 09:13
VLAI
Title
Adobe Framemaker | Integer Underflow (Wrap or Wraparound) (CWE-191)
Summary
Adobe Framemaker versions 2022.8 and earlier are affected by an Integer Underflow (Wrap or Wraparound) 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.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-191 - Integer Underflow (Wrap or Wraparound) (CWE-191)
Assigner
References
Impacted products
Vendor Product Version
Adobe Adobe Framemaker Affected: 0 , ≤ 2022.8 (semver)
Create a notification for this product.
Date Public
2026-04-14 17:00
Show details on NVD website

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No mitigation information available for this CWE.

No CAPEC attack patterns related to this CWE.

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