Vulnerability · Published Oct 26, 2026 · Assigned by VulnCheck

CVE-2026-116732libdwarf through 2.3.3 Heap Out-of-Bounds Read via dwarf_debug_addr_table

Medium 4.4

In plain English

A medium-severity out-of-bounds read in libdwarf from davea42. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 3% of all known vulnerabilities).

Severity (CVSS 3.1)4.4Medium

Exploit odds (30 days)0.1%top 97.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

libdwarf through 2.3.3 contains a heap out-of-bounds read vulnerability in dwarf_debug_addr_table() that omits the table starting offset when validating .debug_addr unit length. Attackers can supply a crafted object file with a non-zero offset table, causing dwarf_debug_addr_by_index() to read past the heap buffer, disclosing adjacent heap bytes or crashing consumers.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Debian:12	dwarfutils	no fix listed	DEBIAN-CVE-2026-116732
Debian:13	dwarfutils	no fix listed	DEBIAN-CVE-2026-116732
Debian:14	dwarfutils	no fix listed	DEBIAN-CVE-2026-116732

Affected products (as reported)

Vendor	Product	Versions
davea42	libdwarf	0 – through 2.3.3

Weakness: CWE-125 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L

References

GitHub Issue #336 issue-tracking
https://github.com/davea42/libdwarf-code product
https://github.com/davea42/libdwarf-code/commit/71f04013ddc2a3c88b9e25a4162ee2824741b593 patch
https://github.com/davea42/libdwarf-code/blob/v2.3.3/src/lib/libdwarf/dwarf_debugaddr.c#L175-L216 technical-description
https://hackmd.io/@haindpwn/libdwarf-debug-addr-table-section-offset-oob-read third-party-advisory
VulnCheck Advisory: libdwarf through 2.3.3 Heap Out-of-Bounds Read via dwarf_debug_addr_table third-party-advisory