CWE-191— Integer Underflow
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.— MITRE CWE catalog
608 active CVEs classified under this weakness category. Sourced from NVD, GHSA, and vendor advisories. Full definition on MITRE →
CVEs classified under CWE-191page 10 of 13
- CVE-2026-106437MEDIUMCVSS 6.2EG 6.22026-10-08
The BSON buffer-reservation API in the MongoDB C Driver can record a length smaller than the five-byte BSON minimum. Later append or comparison operations can underflow unsigned length calculations and read or write outside the document bu…
- CVE-2026-88377MEDIUMCVSS 6.2EG 6.22026-09-24
Bento4 1.6.0.0 contains an integer underflow vulnerability in the avcC and hvcC configuration atom parsers. A specially crafted MP4 file containing an atom with a declared size smaller than AP4_ATOM_HEADER_SIZE can cause AP4_AvccAtom::Crea…
- CVE-2026-61720MEDIUMCVSS 6.2EG 6.22026-09-18
FluidSynth is a software synthesizer based on the SoundFont 2 specifications. From 2.5.0 until 2.5.6, the SF2 parser computes the DMOD modulator count as chunk.size / SF_MOD_SIZE - 1 without rejecting chunks smaller than one record. A craf…
- CVE-2026-76189MEDIUMCVSS 6.2EG 6.22026-08-25
CAI Content Credentials is affected by an Integer Underflow (Wrap or Wraparound) vulnerability that could result in an application denial-of-service. An attacker could exploit this vulnerability to crash the application, leading to a denia…
- CVE-2026-71444MEDIUMCVSS 6.2EG 6.22026-08-25
CAI Content Credentials is affected by an Integer Underflow (Wrap or Wraparound) vulnerability that could result in an application denial-of-service. An attacker could exploit this vulnerability to crash the application, leading to a denia…
- CVE-2026-48435MEDIUMCVSS 6.2EG 6.22026-08-11
CAI Content Credentials is affected by an Integer Underflow (Wrap or Wraparound) vulnerability that could result in an application denial-of-service. An attacker could exploit this vulnerability to crash the application, leading to a denia…
- CVE-2026-71389MEDIUMCVSS 6.2EG 6.22026-08-11
CAI Content Credentials is affected by an Integer Underflow (Wrap or Wraparound) vulnerability that could result in an application denial-of-service. An attacker could exploit this vulnerability to crash the application, leading to a denia…
- CVE-2026-48296MEDIUMCVSS 6.2EG 6.22026-07-14
CAI Content Credentials is affected by an Integer Underflow (Wrap or Wraparound) vulnerability that could result in an application denial-of-service. An attacker could exploit this vulnerability to crash the application, leading to a denia…
- CVE-2026-48298MEDIUMCVSS 6.2EG 6.22026-07-14
CAI Content Credentials is affected by an Integer Underflow (Wrap or Wraparound) vulnerability that could result in an application denial-of-service. An attacker could exploit this vulnerability to crash the application, leading to a denia…
- CVE-2026-34672MEDIUMCVSS 6.2EG 6.22026-05-12
CAI Content Credentials versions [email protected], c2pa-v0.78.2 and earlier are affected by an Integer Underflow (Wrap or Wraparound) vulnerability that could result in an application denial-of-service. An attacker could exploit this vulnera…
- CVE-2026-34667MEDIUMCVSS 6.2EG 6.22026-05-12
CAI Content Credentials versions [email protected], c2pa-v0.78.2 and earlier are affected by an Integer Underflow (Wrap or Wraparound) vulnerability that could result in an application denial-of-service. An attacker could exploit this vulnera…
- CVE-2026-107614MEDIUMCVSS 6.1EG 6.12026-10-08
An integer underflow in WinCursorShapeUtils::trimTransparent() in GlavSoft TightVNC Server for Windows before 2.8.88 allows a local authenticated user to crash the server, and potentially read out-of-bounds memory, by causing a cursor shap…
- CVE-2025-55096MEDIUMCVSS 6.1EG 6.12025-10-17
In USBX before 6.4.3, the USB support module for Eclipse Foundation ThreadX, there was a potential out of bound read issue in _ux_host_class_hid_report_descriptor_get() when parsing a descriptor of an USB HID device.
- CVE-2025-59368MEDIUMCVSS 6.0EG 6.02025-11-25
An integer underflow vulnerability has been identified in Aicloud. An authenticated attacker may trigger this vulnerability by sending a crafted request, potentially impacting the availability of the device. Refer to the ' Security Update…
- CVE-2026-63362MEDIUMCVSS 5.9EG 5.92026-07-30
An unsigned integer underflow in the PubSub signature verification path in open62541 may allow a remote attacker to cause a denial of service via a crafted UDP packet.
- CVE-2024-55627MEDIUMCVSS 5.9EG 5.92025-01-06
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 7.0.8, a specially crafted TCP stream can lead to a very large buffer overflow while being zero-filled during in…
- CVE-2024-32975MEDIUMCVSS 5.9EG 5.92024-06-04
Envoy is a cloud-native, open source edge and service proxy. There is a crash at `QuicheDataReader::PeekVarInt62Length()`. It is caused by integer underflow in the `QuicStreamSequencerBuffer::PeekRegion()` implementation.
- CVE-2023-39350MEDIUMCVSS 5.9EG 5.92023-08-31
FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. This issue affects Clients only. Integer underflow leading to DOS (e.g. abort due to `WINPR_ASSERT` with default compilation flags). …
- CVE-2021-2390MEDIUMCVSS 5.9EG 5.92021-07-21
Vulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB). Supported versions that are affected are 5.7.34 and prior and 8.0.25 and prior. Difficult to exploit vulnerability allows unauthenticated attacker with network …
- CVE-2016-2316MEDIUMCVSS 5.9EG 5.92016-02-22
chan_sip in Asterisk Open Source 1.8.x, 11.x before 11.21.1, 12.x, and 13.x before 13.7.1 and Certified Asterisk 1.8.28, 11.6 before 11.6-cert12, and 13.1 before 13.1-cert3, when the timert1 sip.conf configuration is set to a value greater…
- CVE-2025-29974MEDIUMCVSS 5.7EG 5.72025-05-13
Integer underflow (wrap or wraparound) in Windows Kernel allows an unauthorized attacker to disclose information over an adjacent network.
- CVE-2025-47256MEDIUMCVSS 5.6EG 5.62025-05-06
Libxmp through 4.6.2 has a stack-based buffer overflow in depack_pha in loaders/prowizard/pha.c via a malformed Pha format tracker module in a .mod file.
- CVE-2022-39343MEDIUMCVSS 5.6EG 5.62022-11-08
Azure RTOS FileX is a FAT-compatible file system that’s fully integrated with Azure RTOS ThreadX. In versions before 6.2.0, the Fault Tolerant feature of Azure RTOS FileX includes integer under and overflows which may be exploited to ach…
- CVE-2026-107635MEDIUMCVSS 5.5EG 5.52026-10-08
Dislocker through 0.7.3 contains an integer underflow vulnerability in get_vmk() and get_fvek() that allows attackers to trigger out-of-bounds heap reads via crafted datum sizes. Attackers can supply a malicious BitLocker volume image with…
- CVE-2026-90996MEDIUMCVSS 5.5EG 5.52026-09-14
A flaw was found in sssd. A local unprivileged user could send a specially crafted request with a zero-length body to the Network Security Services (NSS) responder. This could lead to a denial-of-service condition, causing the NSS responde…
- CVE-2026-81977MEDIUMCVSS 5.5EG 5.52026-09-08
Acrobat Reader is affected by an Integer Underflow (Wrap or Wraparound) vulnerability that could lead to disclosure of sensitive memory. An attacker could leverage this vulnerability to disclose sensitive information. Exploitation of this …
- CVE-2026-77488MEDIUMCVSS 5.5EG 5.52026-09-08
Integer underflow (wrap or wraparound) in SQL Server allows an authorized attacker to disclose information locally.
- CVE-2026-69303MEDIUMCVSS 5.5EG 5.52026-09-08
Out-of-bounds read in Push Message Routing Service allows an authorized attacker to disclose information locally.
- CVE-2026-42495MEDIUMCVSS 5.5EG 5.52026-07-28
[This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] The directory and Rock Ridge / SUSP walk in libfsimage's iso9660 driver derives several lengths directly from…
- CVE-2026-50300MEDIUMCVSS 5.5EG 5.52026-07-14
Integer underflow (wrap or wraparound) in Windows Kernel allows an authorized attacker to disclose information locally.
- CVE-2026-57452MEDIUMCVSS 5.5EG 5.52026-06-25
Vim is an open source, command line text editor. Prior to 9.2.0671, when Vim opens a file encrypted with the VimCrypt~04! or VimCrypt~05! method (xchacha20poly1305, requires the +sodium feature) whose body is shorter than a single libsodiu…
- CVE-2026-53150MEDIUMCVSS 5.5EG 5.52026-06-25
In the Linux kernel, the following vulnerability has been resolved: thunderbolt: Reject zero-length property entries in validator tb_property_entry_valid() accepts entries with length == 0 for DIRECTORY, DATA, and TEXT types. A zero-len…
- CVE-2026-45884MEDIUMCVSS 5.5EG 5.52026-05-27
In the Linux kernel, the following vulnerability has been resolved: apparmor: avoid per-cpu hold underflow in aa_get_buffer When aa_get_buffer() pulls from the per-cpu list it unconditionally decrements cache->hold. If hold reaches 0 whi…
- CVE-2026-43359MEDIUMCVSS 5.5EG 5.52026-05-08
In the Linux kernel, the following vulnerability has been resolved: btrfs: fix transaction abort on set received ioctl due to item overflow If the set received ioctl fails due to an item overflow when attempting to add the BTRFS_UUID_KEY…
- CVE-2026-43301MEDIUMCVSS 5.5EG 5.52026-05-08
In the Linux kernel, the following vulnerability has been resolved: media: chips-media: wave5: Fix PM runtime usage count underflow Replace pm_runtime_put_sync() with pm_runtime_dont_use_autosuspend() in the remove path to properly pair …
- CVE-2026-43171MEDIUMCVSS 5.5EG 5.52026-05-06
In the Linux kernel, the following vulnerability has been resolved: EFI/CPER: don't dump the entire memory region The current logic at cper_print_fw_err() doesn't check if the error record length is big enough to handle offset. On a bad …
- CVE-2026-31617MEDIUMCVSS 5.5EG 5.52026-04-24
In the Linux kernel, the following vulnerability has been resolved: usb: gadget: f_ncm: validate minimum block_len in ncm_unwrap_ntb() The block_len read from the host-supplied NTB header is checked against ntb_max but has no lower bound…
- CVE-2026-31551MEDIUMCVSS 5.5EG 5.52026-04-24
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: Fix static_branch_dec() underflow for aql_disable. syzbot reported static_branch_dec() underflow in aql_enable_write(). [0] The problem is that aql_enab…
- CVE-2026-39855MEDIUMCVSS 5.5EG 5.52026-04-09
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()). Whe…
- CVE-2026-23069MEDIUMCVSS 5.5EG 5.52026-02-04
In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: fix potential underflow in virtio_transport_get_credit() The credit calculation in virtio_transport_get_credit() uses unsigned arithmetic: ret = vvs->pe…
- CVE-2026-23951MEDIUMCVSS 5.5EG 5.52026-01-22
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 PalmDbRead…
- CVE-2025-62594MEDIUMCVSS 5.5EG 5.52025-10-27
ImageMagick is a software suite to create, edit, compose, or convert bitmap images. ImageMagick versions prior to 7.1.2-8 are vulnerable to denial-of-service due to unsigned integer underflow and division-by-zero in the CLAHEImage function…
- CVE-2023-53679MEDIUMCVSS 5.5EG 5.52025-10-07
In the Linux kernel, the following vulnerability has been resolved: wifi: mt7601u: fix an integer underflow Fix an integer underflow that leads to a null pointer dereference in 'mt7601u_rx_skb_from_seg()'. The variable 'dma_len' in the U…
- CVE-2025-39928MEDIUMCVSS 5.5EG 5.52025-10-01
In the Linux kernel, the following vulnerability has been resolved: i2c: rtl9300: ensure data length is within supported range Add an explicit check for the xfer length to 'rtl9300_i2c_config_xfer' to ensure the data length isn't within …
- CVE-2023-53258MEDIUMCVSS 5.5EG 5.52025-09-15
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix possible underflow for displays with large vblank [Why] Underflow observed when using a display with a large vblank region and low refresh rate [Ho…
- CVE-2023-53226MEDIUMCVSS 5.5EG 5.52025-09-15
In the Linux kernel, the following vulnerability has been resolved: wifi: mwifiex: Fix OOB and integer underflow when rx packets Make sure mwifiex_process_mgmt_packet, mwifiex_process_sta_rx_packet and mwifiex_process_uap_rx_packet, mwif…
- CVE-2023-53189MEDIUMCVSS 5.5EG 5.52025-09-15
In the Linux kernel, the following vulnerability has been resolved: ipv6/addrconf: fix a potential refcount underflow for idev Now in addrconf_mod_rs_timer(), reference idev depends on whether rs_timer is not pending. Then modify rs_time…
- CVE-2025-38463MEDIUMCVSS 5.5EG 5.52025-07-25
In the Linux kernel, the following vulnerability has been resolved: tcp: Correct signedness in skb remaining space calculation Syzkaller reported a bug [1] where sk->sk_forward_alloc can overflow. When we send data, if an skb exists at …
- CVE-2025-38161MEDIUMCVSS 5.5EG 5.52025-07-03
In the Linux kernel, the following vulnerability has been resolved: RDMA/mlx5: Fix error flow upon firmware failure for RQ destruction Upon RQ destruction if the firmware command fails which is the last resource to be destroyed some SW r…
- CVE-2022-50036MEDIUMCVSS 5.5EG 5.52025-06-18
In the Linux kernel, the following vulnerability has been resolved: drm/sun4i: dsi: Prevent underflow when computing packet sizes Currently, the packet overhead is subtracted using unsigned arithmetic. With a short sync pulse, this could…
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