CVE-2025-69648: GNU Binutils thru 2.45.1 readelf contains a denial-of-service vulnerability when processing a crafted binary with malformed DWARF .debug_rnglists data. A logic flaw in the DWARF parsing path causes readelf to repeatedly print the same warning message without making forward progress, resulting in a non-terminating output loop that requires manual interruption. No evidence of memory corruption or code execution was observed.
CSIRTS triage
- What
- A logic flaw in DWARF .debug_rnglists parsing causes readelf to enter an infinite loop, repeatedly printing warnings.
- Who is affected
- Systems using readelf to process untrusted or malformed ELF binaries with DWARF debug data.
- Urgency
- High priority; the vulnerability enables easy denial of service and may impact software supply chain tooling.
- Action
- Update GNU Binutils to a version that fixes the DWARF .debug_rnglists parsing logic.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-69648
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-2025-696480.18% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 7% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2025-69648 | coverage & exploitation status | NVD · CVE.org |
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