CVE-2026-15520

MEDIUMPre-NVD 5.35.3
EchelonGraph scoreLOW confidence

This medium-severity CVE scores 5.3 under the CNA's CVSS (NVD's own analysis pending). EPSS exploit-prediction score not yet available (the EPSS model rescores nightly; freshly-published CVEs typically appear within 48 hours). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: cna:vuldb
Trending — 3 sources updated this week
5.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: —CVSS: 5.3Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

A vulnerability was determined in GNU LibreDWG 0.13.4-154-g0b573035. This impacts the function decompress_R2004_section of the file src/decode.c of the component R2004 Section Decompression. Executing a manipulation can lead to heap-based buffer overflow. The attack requires local access. The exploit has been publicly disclosed and may be utilized. Upgrading to version 0.14.8396 will fix this issue. This patch is called 3d0f9fc2eddbd6579c99af3111c37c98f03475d0. You should upgrade the affected component.

CVSS v3
5.3
EG Score
5.3(low)
EPSS
—
KEV
Not listed

Published

July 13, 2026

Last Modified

July 13, 2026

Advisory Details (5)

Auto-updated Jul 13, 2026
Patch available. Sources: github_commit, github_release.
generic

The GNU Operating System and the Free Software Movement

https://www.gnu.org/
github_release Patch Available

0.14.8396

Patch available: LibreDWG/libredwg 0.14.8396 (pre-release)

https://github.com/LibreDWG/libredwg/releases/tag/0.14.8396
github_commit

commit 3d0f9fc2eddb (LibreDWG/libredwg)

Fix landed in LibreDWG/libredwg commit 3d0f9fc2eddb — awaiting tagged release

https://github.com/LibreDWG/libredwg/commit/3d0f9fc2eddbd6579c99af3111c37c98f03475d0
generic

CVE-Repos/libredwg/libredwg_0b57303_heap_overflow_decompress_R2004_section.dwg at main · HackC0der/CVE-Repos · GitHub

https://github.com/HackC0der/CVE-Repos/blob/main/libredwg/libredwg_0b57303_heap_overflow_decompress_R2004_section.dwg
generic

Heap-buffer-overflow WRITE in decompress_R2004_section at decode.c:1295 (libredwg main branch @0b57303) · Issue #1251 · LibreDWG/libredwg · GitHub

https://github.com/LibreDWG/libredwg/issues/1251

Vendor Advisories for CVE-2026-15520(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 3× in last 7d / 3× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-13 02:18 UTCNVD updateCVSS v4 → 1.9
  2. 2026-07-13 01:48 UTCEG score recompute
  3. 2026-07-13 01:47 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(4)

What is CVE-2026-15520?
CVE-2026-15520 is a medium vulnerability published on July 13, 2026. A vulnerability was determined in GNU LibreDWG 0.13.4-154-g0b573035. This impacts the function decompressR2004section of the file src/decode.c of the component R2004 Section Decompression. Executing a manipulation can lead to heap-based buffer overflow. The attack requires local access. The exploit…
When was CVE-2026-15520 disclosed?
CVE-2026-15520 was first published in the National Vulnerability Database on July 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
What is the CVSS score of CVE-2026-15520?
CVE-2026-15520 has a CVSS v3 base score of 5.3 (NVD). The EG score is currently aggregating — additional source signals are being incorporated as they become available..
How do I remediate CVE-2026-15520?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-15520, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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