How severe is CVE-2016-9558?

CVE-2016-9558 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2016-9558 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-9558?

CVE-2016-9558 affects Libdwarf Project Libdwarf. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2016-9558?

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

When was CVE-2016-9558 published?

CVE-2016-9558 was published on 2017-02-28 and last updated on 2026-06-17.

CVE-2016-9558

CVE-2016-9558 is a critical-severity vulnerability in Libdwarf Project Libdwarf with a CVSS 3.x base score of 9.8. 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-190.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 5% (91st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-190
Affected product: Libdwarf Project Libdwarf
Published: 2017-02-28
Last modified: 2026-06-17

Description

(1) libdwarf/dwarf_leb.c and (2) dwarfdump/print_frames.c in libdwarf before 20161124 allow remote attackers to have unspecified impact via a crafted bit pattern in a signed leb number, aka a "negation overflow."

Frequently asked questions

What is CVE-2016-9558?: (1) libdwarf/dwarf_leb.c and (2) dwarfdump/print_frames.c in libdwarf before 20161124 allow remote attackers to have unspecified impact via a crafted bit pattern in a signed leb number, aka a "negation overflow."
How severe is CVE-2016-9558?: CVE-2016-9558 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2016-9558 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-9558?: CVE-2016-9558 affects Libdwarf Project Libdwarf. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2016-9558?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2016-9558 published?: CVE-2016-9558 was published on 2017-02-28 and last updated on 2026-06-17.

References

Affected products (1)

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

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