CVE-2011-5320: gnu glibc
Vulnerability summary
CVE-2011-5320 is a medium (CVSS 6.2) vulnerability in gnu glibc. EPSS estimates a 0.47% chance of exploitation in the next 30 days, higher than 40.4% of scored vulnerabilities. 1 public exploit is recorded.
Not severe (CVSS 6.2, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 1Timeline
- 18-10-2017PublishedVulnerability first disclosed.
- 07-08-2024Last modifiedVulnerability information updated.
Description
scanf and related functions in glibc before 2.15 allow local users to cause a denial of service (segmentation fault) via a large string of 0s.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated6.2MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated6.2MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.47%
Chance of exploitation in the next 30 days
Percentile
40%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.47% on 04-10-2026
Known exploited
Compare KEV catalogsNot in the CISA KEV catalog.
Not in the ENISA CNW catalog.
Not in the CIRCL catalog.
Public exploits
1 foundExploit Reference (marc.info)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Debian1 product
- glibc< 2.15
Gnu1 product
- glibc≤ 2.14.1
Ubuntu1 product
- eglibc< 2.19-0ubuntu6.6
3 vendors · 3 products
References
10 links- sourceware.org/git/?p=glibc.git%3Ba=commitdiff%3Bh=20b38e0X Refsource CONFIRM
- sourceware.org/git/?p=glibc.git%3Ba=commitdiff%3Bh=3f8cc204fdd0X Refsource CONFIRM