CVE-2026-88355High· 7.5▾ MidnightPoC availableAn incorrect buffer size calculation vulnerability exists in tinyexpr commit 4a7456e in new_expr(). For arity-0 expression nodes, including constants, variables, and zero-argument functions, the function allocates less memory than sizeof…
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 41.3 · likelihood 0.1 · exploitation 12
A public proof-of-concept already exists for this vulnerability — see Exploit availability below.
Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Sep 26.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.2%
Last analysed / modified upstream
Exploit / PoC code exists
— → 7.5
none → high
0.2% → 0.4%
An incorrect buffer size calculation vulnerability exists in tinyexpr commit 4a7456e in new_expr(). For arity-0 expression nodes, including constants, variables, and zero-argument functions, the function allocates less memory than sizeof(te_expr) but treats the returned allocation as a complete te_expr object. This results in undefined behavior and can cause deterministic process termination in UBSan-instrumented builds.
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-112008Medium· 6.1libmng through 2.0.3 Heap Buffer Overflow via ORDR Chunk Reader mng_read_ordr
CVE-2025-0395Medium· 6.2When the assert() function in the GNU C Library versions 2.13 to 2.40 fails, it does not allocate enough space for the assertion failure message string and size information, which may lead to a buffer overflow if the message string size …
CVE-2023-6780Medium· 5.3Glibc: integer overflow in __vsyslog_internal()
CVE-2026-92156Medium· 6.5F´ (F Prime) is a framework that enables development and deployment of spaceflight and other embedded software applications
CVE-2026-55556High· 8.2Rsyslog is a rocket-fast system for log processing
CVE-2026-84448Medium· 4.0libheif is a HEIF and AVIF file format decoder and encoder