CVE-2019-1010023: GNU Libc current is affected by: Re-mapping current loaded library with malicious ELF file

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MEDIUM 5.4MITIGATE

CVE-2019-1010023 is a medium-severity flaw (CVSS 5.4) affecting glibc. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

GNU Libc current is affected by: Re-mapping current loaded library with malicious ELF file. The impact is: In worst case attacker may evaluate privileges. The component is: libld. The attack vector is: Attacker sends 2 ELF files to victim and asks to run ldd on it. ldd execute code. NOTE: Upstream comments indicate "this is being treated as a non-security bug and no real threat.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	3.1% (top 12%)
CISA exploited list	No
Published	2019-07-15
Last modified	2026-10-14

Publisher (CNA): DWF · Vendor: gnu

Last updated 2026-10-14 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2019-07-15 04:15 UTCPublished CVE record published
2026-10-14 09:17 UTCUpdated Record last modified

gnu glibc MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy glibc || rpm -q glibc || glibc --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

Downgrade not recommended

This is a core system component: downgrading can break the OS. Apply the distro update or the vendor mitigation.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2019-1010023?

glibc: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2019-1010023 being exploited?

CVE-2019-1010023 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2019-1010023 affect?

CVE-2019-1010023 affects glibc. Severity is medium (CVSS 5.4). GNU Libc current is affected by: Re-mapping current loaded library with malicious ELF file. The impact is: In worst case attacker may evaluate privileges. The component is: libld. The attack vector is: Attacker sends 2 ELF files to victim a

How urgent is CVE-2019-1010023?

Priority 46/100. Public exploit reference

Software pages

glibc vulnerabilities

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References

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