How severe is CVE-2020-6609?

CVE-2020-6609 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-6609 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-6609?

CVE-2020-6609 primarily affects Gnu Libredwg. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-6609?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-6609 published?

CVE-2020-6609 was published on 2020-01-08 and last updated on 2026-06-17.

CVE-2020-6609

CVE-2020-6609 is a high-severity vulnerability in Gnu Libredwg with a CVSS 3.x base score of 8.8. 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-125.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.8
EPSS exploit prediction: 2% (75th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-125
Affected product: Gnu Libredwg
Published: 2020-01-08
Last modified: 2026-06-17

Description

GNU LibreDWG 0.9.3.2564 has a heap-based buffer over-read in read_pages_map in decode_r2007.c.

Frequently asked questions

What is CVE-2020-6609?: GNU LibreDWG 0.9.3.2564 has a heap-based buffer over-read in read_pages_map in decode_r2007.c.
How severe is CVE-2020-6609?: CVE-2020-6609 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-6609 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-6609?: CVE-2020-6609 primarily affects Gnu Libredwg. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-6609?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-6609 published?: CVE-2020-6609 was published on 2020-01-08 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:a:gnu:libredwg:0.9.3.2564:*:*:*:*:*:*:*
cpe:2.3:a:opensuse:backports_sle:15.0:sp1:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*

More vulnerabilities in Gnu Libredwg

CVE-2022-35164 — Critical (CVSS 9.8): LibreDWG v0.12.4.4608 & commit f2dea29 was discovered to contain a heap use-after-free via bit_copy_chain.
CVE-2021-28237 — Critical (CVSS 9.8): LibreDWG v0.12.3 was discovered to contain a heap-buffer overflow via decode_preR13.
CVE-2019-20914 — Critical (CVSS 9.8): An issue was discovered in GNU LibreDWG through 0.9.3. There is a NULL pointer dereference in the function…
CVE-2019-9775 — Critical (CVSS 9.1): An issue was discovered in GNU LibreDWG 0.7 and 0.7.1645. There is an out-of-bounds read in the function…
CVE-2019-9774 — Critical (CVSS 9.1): An issue was discovered in GNU LibreDWG 0.7 and 0.7.1645. There is an out-of-bounds read in the function bit_read_B at…
CVE-2023-36274 — High (CVSS 8.8): LibreDWG v0.11 to v0.12.5 was discovered to contain a heap buffer overflow via the function bit_write_TF at bits.c.

All CVEs affecting Gnu Libredwg →

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