CVE-2017-12133: gnu glibc Use After Free
Vulnerability summary
CVE-2017-12133 is a medium (CVSS 5.9) Use After Free vulnerability in gnu glibc. EPSS estimates a 2.40% chance of exploitation in the next 30 days, higher than 84% of scored vulnerabilities.
Not severe (CVSS 5.9, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 4 · Related 2Timeline
- 07-09-2017PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
Use-after-free vulnerability in the clntudp_call function in sunrpc/clnt_udp.c in the GNU C Library (aka glibc or libc6) before 2.26 allows remote attackers to have unspecified impact via vectors related to error path.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated5.9MediumCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
- OSV · DebianEcosystem advisory · calculated5.9MediumCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS trend
Probability
2.40%
Chance of exploitation in the next 30 days
Percentile
84%
Versus all other CVEs
30-day change
No change 0.00 pp
From 2.40% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Suse12 products
- glibc&distro=SUSE Linux Enterprise Desktop 12 SP2< 2.22-62.10.1
- glibc&distro=SUSE Linux Enterprise Desktop 12 SP3< 2.22-62.10.1
- glibc&distro=SUSE Linux Enterprise Server 11 SP4< 2.11.3-17.110.9.2
- glibc&distro=SUSE Linux Enterprise Server 12 SP2< 2.22-62.10.1
- glibc&distro=SUSE Linux Enterprise Server 12 SP3< 2.22-62.10.1
Ubuntu2 products
- eglibcAll versions (No fix recorded)
- glibc< 2.23-0ubuntu11.2
Debian1 product
- glibc< 2.24-15
Gnu1 product
- glibc≤ 2.25
4 vendors · 16 products
