CVE-2025-69645: Binutils objdump contains a denial-of-service vulnerability when processing a crafted binary with malformed DWARF debug information. A logic error in the handling of DWARF compilation units can result in an invalid offset_size value being used inside byte_get_little_endian, leading to an abort (SIGABRT). The issue was observed in binutils 2.44. A local attacker can trigger the crash by supplying a malicious input file.

CSIRTS triage

What

objdump contains a denial-of-service vulnerability triggered by malformed DWARF debug information causing invalid offset_size handling.

Who is affected

Systems using binutils objdump to process untrusted or corrupted binaries with DWARF debug sections.

Urgency

Medium urgency; crash vulnerability in debug info processing, useful for DoS on analysis tools.

Action

Update binutils objdump to a patched version that validates DWARF compilation unit offsets.

AI-assisted analysis generated from the source advisory — verify against the original.

Details

Source

Microsoft Security Response Center (INTL · vendor-psirt · site)

Severity

medium — CVSS 5.5

Published

2026-08-06

Exploitation

Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-69645

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

• Low exploitation riskCVE-2025-696450.17% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 6% of all EPSS-scored CVEs.

Referenced CVEs

Recent advisories for Binutils objdump contains

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

• mediumCVE-2025-69646: Binutils objdump contains a denial-of-service vulnerability when processing a crafted binary w…msrc · 2026-08-06
• mediumCVE-2025-69644: An issue was discovered in Binutils before 2.46. The objdump contains a denial-of-service vuln…msrc · 2026-08-06

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