How severe is CVE-2020-27545?

CVE-2020-27545 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2020-27545 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-27545?

CVE-2020-27545 affects Libdwarf Project Libdwarf. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-27545?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-27545 published?

CVE-2020-27545 was published on 2023-04-16 and last updated on 2026-06-17.

CVE-2020-27545

CVE-2020-27545 is a medium-severity vulnerability in Libdwarf Project Libdwarf with a CVSS 3.x base score of 6.5. 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-763.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-763
Affected product: Libdwarf Project Libdwarf
Published: 2023-04-16
Last modified: 2026-06-17

Description

libdwarf before 20201017 has a one-byte out-of-bounds read because of an invalid pointer dereference via an invalid line table in a crafted object.

Frequently asked questions

What is CVE-2020-27545?: libdwarf before 20201017 has a one-byte out-of-bounds read because of an invalid pointer dereference via an invalid line table in a crafted object.
How severe is CVE-2020-27545?: CVE-2020-27545 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2020-27545 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-27545?: CVE-2020-27545 affects Libdwarf Project Libdwarf. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-27545?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-27545 published?: CVE-2020-27545 was published on 2023-04-16 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:libdwarf_project:libdwarf:*:*:*:*:*:*:*:*

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