Libuser vulnerabilitiesAnd the versions its exploited flaws hit.
Libuser is made by Red Hat. We track 2 published vulnerabilities in it, across 6 versions. 1 of them is on the list of flaws known to be exploited, the newest added on 26 August 2026. If you run Libuser, check your version against the exploited flaws below and patch those first.
The most recent Libuser flaw added to the known-exploited list is CVE-2015-3246, on 26 August 2026. We keep watching the known-exploited list.
Which versions of Libuser do the exploited flaws hit?
Each exploited flaw lists the versions it affects, as published by the vendor. Find your version, then patch.
- CVE-2015-3246Exploited list, 26 Aug 2026
Red Hat Libuser Race Condition Vulnerability
up to 0.56.13-50.60-10.60-20.60-30.60-40.60-50.60-6
Which Libuser vulnerabilities are being exploited?
1 flaw is on the government list of vulnerabilities known to be exploited. These are the ones criminals are using now, so they go first, whatever their severity score says.
- 7.2Red Hat Libuser Race Condition Vulnerability
Red Hat libuser contains a race condition vulnerability that allows authenticated local users to corrupt the /etc/passwd file to cause a denial of service or privilege escalation.
Which Libuser flaws are most likely to be used?
Ranked by the latest exploit-likelihood forecast: the chance each flaw is used in an attack in the next 30 days. A high severity score on its own doesn't tell you that. Flaws shared by many other makers' products are left out.
- 8.5%
libuser before 0.56.13-8 and 0.60 before 0.60-7, as used in the userhelper program in the usermode package, directly modifies /etc/passwd, which allows local users to cause a denial of service (inconsistent file...
- 5.4%
Incomplete blacklist vulnerability in the chfn function in libuser before 0.56.13-8 and 0.60 before 0.60-7, as used in the userhelper program in the usermode package, allows local users to cause a denial of service...
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1 flaw being exploited affects software Acme tracks
Red Hat libuser contains a race condition vulnerability that allows authenticated local users to corrupt the /etc/passwd file to cause a denial of service or privilege escalation.
- Matched to
- Libuser on Acme's software list
- What to do
- Patch first, then check for signs of use
Sent to the alert recipients Acme chose. Also in the app and to Acme's webhook.
We track 2 published vulnerabilities listed under the name Libuser, across 6 versions. The most recent Libuser flaw added to the known-exploited list is CVE-2015-3246, on 26 August 2026.
1 is on the list of flaws known to be exploited. The most recently added is CVE-2015-3246.
Each flaw names its own versions, usually as ranges. The newest, CVE-2015-3246, affects up to 0.56.13-5, 0.60-1, 0.60-2, 0.60-3 and more. The versions for every exploited flaw are listed on this page.
Create a EdgeProtect account and track Libuser. We match it against every published flaw, give each one a risk score from 0 to 100 and keep watching, so you hear about new ones as soon as we know, by email, in the app or by webhook.