CVE-2026-9504
CVE-2026-9504 is a low-severity vulnerability with a CVSS 3.x base score of 3.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.
Key facts
- Severity: Low (CVSS 3.x base score 3.3)
- CVSS v2: 1.7
- CVSS v4: 1.9
- EPSS exploit prediction: 0% (7th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-31745
- Weakness: CWE-119
- Published:
- Last modified:
Description
A weakness has been identified in GNU LibreDWG up to 0.14. Affected is the function bit_convert_TU of the file programs/dwggrep.c of the component Dwggrep Utility. This manipulation causes out-of-bounds read. The attack needs to be launched locally. The exploit has been made available to the public and could be used for attacks. Patch name: be996bf2178a40e98720f18c2414815d244413db. Applying a patch is the recommended action to fix this issue.
Frequently asked questions
- What is CVE-2026-9504?
- A weakness has been identified in GNU LibreDWG up to 0.14. Affected is the function bit_convert_TU of the file programs/dwggrep.c of the component Dwggrep Utility. This manipulation causes out-of-bounds read. The attack needs to be launched locally. The exploit has been made available to the public and could be used for attacks. Patch name: be996bf2178a40e98720f18c2414815d244413db. Applying a patch is the recommended action to fix this issue.
- How severe is CVE-2026-9504?
- CVE-2026-9504 has a CVSS 3.x base score of 3.3, rated low severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
- Is CVE-2026-9504 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-9504?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2026-9504 have an EU (EUVD) identifier?
- Yes. CVE-2026-9504 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-31745.
- When was CVE-2026-9504 published?
- CVE-2026-9504 was published on 2026-05-25 and last updated on 2026-06-17.
References
- https://github.com/HackC0der/CVE-Repos/blob/main/libredwg/libredwg_6d6a339_heap_overflow_bit_convert_TU.dwg
- https://github.com/LibreDWG/libredwg/commit/be996bf2178a40e98720f18c2414815d244413db
- https://github.com/LibreDWG/libredwg/issues/1246
- https://vuldb.com/submit/814261
- https://vuldb.com/vuln/365486
- https://vuldb.com/vuln/365486/cti
- https://www.gnu.org/
Other CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) vulnerabilities
- CVE-2026-2778 — Critical (CVSS 10.0): Sandbox escape due to incorrect boundary conditions in the DOM: Core & HTML component. This vulnerability was fixed in…
- CVE-2026-2776 — Critical (CVSS 10.0): Sandbox escape due to incorrect boundary conditions in the Telemetry component in External Software. This vulnerability…
- CVE-2025-1866 — Critical (CVSS 10.0): Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in warmcat libwebsockets allows…
- CVE-2022-27625 — Critical (CVSS 10.0): A vulnerability regarding improper restriction of operations within the bounds of a memory buffer is found in the…
- CVE-2022-27624 — Critical (CVSS 10.0): A vulnerability regarding improper restriction of operations within the bounds of a memory buffer is found in the…
- CVE-2020-11896 — Critical (CVSS 10.0): The Treck TCP/IP stack before 6.0.1.66 allows Remote Code Execution, related to IPv4 tunneling.