CVE-2016-9558

Name: CVE-2016-9558
Creator: NVD / NIST
Published: 2017-02-28T18:59:00.313+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 5.11%

Last modified Jun 17, 2026

CVE-2016-9558 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. (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.". EPSS estimates a 5.11% chance of exploitation in the next 30 days.

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."

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

5.11%

91.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-190

Affected Software

Vendor	Product	Versions
Libdwarf Project	Libdwarf	>= 1999-12-14, < 2016-11-24

References

http://www.openwall.com/lists/oss-security/2016/11/19/6Mailing List, Patch, Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/11/23/3Mailing List, Patch, Third Party Advisory
http://www.securityfocus.com/bid/94491Third Party Advisory, VDB Entry
https://blogs.gentoo.org/ago/2016/11/19/libdwarf-negation-overflow-in-dwarf_leb-c/Exploit, Patch, Third Party Advisory, VDB Entry
https://sourceforge.net/p/libdwarf/code/ci/4f19e1050cd8e9ddf2cb6caa061ff2fec4c9b5f9/#diff-5Third Party Advisory
https://www.prevanders.net/dwarfbug.htmlThird Party Advisory
http://www.openwall.com/lists/oss-security/2016/11/19/6Mailing List, Patch, Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/11/23/3Mailing List, Patch, Third Party Advisory
http://www.securityfocus.com/bid/94491Third Party Advisory, VDB Entry
https://blogs.gentoo.org/ago/2016/11/19/libdwarf-negation-overflow-in-dwarf_leb-c/Exploit, Patch, Third Party Advisory, VDB Entry
https://sourceforge.net/p/libdwarf/code/ci/4f19e1050cd8e9ddf2cb6caa061ff2fec4c9b5f9/#diff-5Third Party Advisory
https://www.prevanders.net/dwarfbug.htmlThird Party Advisory

Timeline

Published: Feb 28, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2016-9558?

How severe is CVE-2016-9558?

CVE-2016-9558 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 5.11% probability of exploitation in the next 30 days.

How do I fix CVE-2016-9558?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2016-9558?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST