CWE-191
Integer Underflow (Wrap or Wraparound)
BaseDraft
Description
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.
This can happen in signed and unsigned cases.
Hierarchy (View 1000)
Parents
Children
none
CVEs mapped to this weakness (106)
page 5 of 6| CVE | Sev | Risk | CVSS | EPSS | KEV | Published | Description |
|---|---|---|---|---|---|---|---|
| CVE-2026-22185 | Med | 0.30 | — | 0.00 | Jan 7, 2026 | 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. | |
| CVE-2017-8924 | Med | 0.30 | 4.6 | 0.00 | May 12, 2017 | The edge_bulk_in_callback function in drivers/usb/serial/io_ti.c in the Linux kernel before 4.10.4 allows local users to obtain sensitive information (in the dmesg ringbuffer and syslog) from uninitialized kernel memory by using a crafted USB device (posing as an io_ti USB serial device) to trigger an integer underflow. | |
| CVE-2026-26204 | Med | 0.29 | 4.4 | 0.00 | Apr 29, 2026 | 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. | |
| CVE-2026-39855 | Med | 0.29 | 5.5 | 0.00 | Apr 9, 2026 | osslsigncode is a tool that implements Authenticode signing and timestamping. Prior to 2.13, an integer underflow vulnerability exists in osslsigncode version 2.12 and earlier in the PE page-hash computation code (pe_page_hash_calc()). When page hash processing is performed on a PE file, the function subtracts hdrsize from pagesize without first validating that pagesize >= hdrsize. If a malicious PE file sets SizeOfHeaders (hdrsize) larger than SectionAlignment (pagesize), the subtraction underflows and produces a very large unsigned length. The code allocates a zero-filled buffer of pagesize bytes and then attempts to hash pagesize - hdrsize bytes from that buffer. After the underflow, this results in an out-of-bounds read from the heap and can crash the process. The vulnerability can be triggered while signing a malicious PE file with page hashing enabled (-ph), or while verifying a malicious signed PE file that already contains page hashes. Verification of an already signed file does not require the verifier to pass -ph. This vulnerability is fixed in 2.13. | |
| CVE-2026-8463 | Med | 0.27 | 5.3 | 0.00 | May 13, 2026 | Crypt::Argon2 versions from 0.017 before 0.031 for Perl perform a heap out-of-bounds read in argon2_verify on empty encoded input. The auto-detect form of argon2_verify passes encoded_len - 1 as the length argument to memchr without checking that encoded_len is non-zero. When the encoded string is empty, the size_t subtraction underflows to SIZE_MAX and memchr scans adjacent heap memory looking for a '$' separator byte. A caller that invokes argon2_verify against a stored hash that may legitimately be empty (for example a placeholder row or a NULL column materialised as an empty string) reads out-of-bounds heap memory, which can crash the process or leak the position of an adjacent '$' byte into subsequent parsing. | |
| CVE-2026-34064 | Med | 0.27 | 5.3 | 0.00 | Apr 22, 2026 | nimiq-account contains account primitives to be used in Nimiq's Rust implementation. Prior to version 1.3.0, `VestingContract::can_change_balance` returns `AccountError::InsufficientFunds` when `new_balance < min_cap`, but it constructs the error using `balance: self.balance - min_cap`. `Coin::sub` panics on underflow, so if an attacker can reach a state where `min_cap > balance`, the node crashes while trying to return an error. The `min_cap > balance` precondition is attacker-reachable because the vesting contract creation data (32-byte format) allows encoding `total_amount` without validating `total_amount <= transaction.value` (the real contract balance). After creating such a vesting contract, the attacker can broadcast an outgoing transaction to trigger the panic during mempool admission and block processing. The patch for this vulnerability is included as part of v1.3.0. No known workarounds are available. | |
| CVE-2026-39314 | Med | 0.26 | 4.0 | 0.00 | Apr 7, 2026 | OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, an integer underflow vulnerability in _ppdCreateFromIPP() (cups/ppd-cache.c) allows any unprivileged local user to crash the cupsd root process by supplying a negative job-password-supported IPP attribute. The bounds check only caps the upper bound, so a negative value passes validation, is cast to size_t (wrapping to ~2^64), and is used as the length argument to memset() on a 33-byte stack buffer. This causes an immediate SIGSEGV in the cupsd root process. Combined with systemd's Restart=on-failure, an attacker can repeat the crash for sustained denial of service. | |
| CVE-2026-23748 | Low | 0.24 | 3.7 | 0.00 | Feb 26, 2026 | 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. | |
| CVE-2023-28902 | Low | 0.21 | 3.3 | 0.00 | Jun 28, 2025 | An integer underflow in the image processing binary of the MIB3 infotainment unit allows an attacker with local access to the vehicle to cause denial-of-service of the infotainment system. The vulnerability was originally discovered in Skoda Superb III car with MIB3 infotainment unit OEM part number 3V0035820. The list of affected MIB3 OEM part numbers is provided in the referenced resources. | |
| CVE-2026-40386 | Med | 0.19 | 4.0 | 0.00 | Apr 12, 2026 | In libexif through 0.6.25, an integer underflow in size checking for Fuji and Olympus MakerNote decoding could be used by attackers to crash or leak information out of libexif-using programs. | |
| CVE-2025-14055 | Low | 0.16 | — | 0.00 | Feb 20, 2026 | An integer underflow vulnerability in Silicon Labs Secure NCP host implementation allows a buffer overread via a specially crafted packet. | |
| CVE-2025-14547 | Low | 0.15 | — | 0.00 | Feb 20, 2026 | An integer underflow vulnerability is present in Silicon Lab’s implementation of PSA Crypto and SE Manager EC-JPAKE APIs during ZKP parsing. Triggering the underflow can lead to a hard fault, causing a temporary denial of service. | |
| CVE-2025-49112 | Low | 0.13 | 3.1 | 0.00 | Jun 2, 2025 | setDeferredReply in networking.c in Valkey through 8.1.1 has an integer underflow for prev->size - prev->used. | |
| CVE-2004-0184 | 0.08 | — | 0.65 | May 4, 2004 | Integer underflow in the isakmp_id_print for TCPDUMP 3.8.1 and earlier allows remote attackers to cause a denial of service (crash) via an ISAKMP packet with an Identification payload with a length that becomes less than 8 during byte order conversion, which causes an out-of-bounds read, as demonstrated by the Striker ISAKMP Protocol Test Suite. | ||
| CVE-2014-8768 | 0.06 | — | 0.34 | Nov 20, 2014 | Multiple Integer underflows in the geonet_print function in tcpdump 4.5.0 through 4.6.2, when in verbose mode, allow remote attackers to cause a denial of service (segmentation fault and crash) via a crafted length value in a Geonet frame. | ||
| CVE-2015-5212 | 0.03 | — | 0.43 | Nov 10, 2015 | Integer underflow in LibreOffice before 4.4.5 and Apache OpenOffice before 4.1.2, when the configuration setting "Load printer settings with the document" is enabled, allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via crafted PrinterSetup data in an ODF document. | ||
| CVE-2009-3301 | 0.03 | — | 0.43 | Feb 16, 2010 | Integer underflow in filter/ww8/ww8par2.cxx in OpenOffice.org (OOo) before 3.2 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted sprmTDefTable table property modifier in a Word document. | ||
| CVE-2013-6424 | 0.01 | — | 0.07 | Jan 18, 2014 | Integer underflow in the xTrapezoidValid macro in render/picture.h in X.Org allows context-dependent attackers to cause a denial of service (crash) via a negative bottom value. | ||
| CVE-2007-0063 | 0.01 | — | 0.08 | Sep 21, 2007 | Integer underflow in the DHCP server in EMC VMware Workstation before 5.5.5 Build 56455 and 6.x before 6.0.1 Build 55017, Player before 1.0.5 Build 56455 and Player 2 before 2.0.1 Build 55017, ACE before 1.0.3 Build 54075 and ACE 2 before 2.0.1 Build 55017, and Server before 1.0.4 Build 56528 allows remote attackers to execute arbitrary code via a malformed DHCP packet that triggers a stack-based buffer overflow. | ||
| CVE-2014-9087 | 0.00 | — | 0.04 | Dec 1, 2014 | Integer underflow in the ksba_oid_to_str function in Libksba before 1.3.2, as used in GnuPG, allows remote attackers to cause a denial of service (crash) via a crafted OID in a (1) S/MIME message or (2) ECC based OpenPGP data, which triggers a buffer overflow. |