7

CVE-2020-1752: canonical ubuntu_linux Use After Free

Modified
AliasesSUSE-SU-2020:0820-1SUSE-SU-2022:1123-1UBUNTU-CVE-2020-1752
Published 30-04-2020Last modified 14-10-2026

Vulnerability summary

CVE-2020-1752 is a high (CVSS 7.0) Use After Free vulnerability in canonical ubuntu_linux. EPSS estimates a 0.55% chance of exploitation in the next 30 days, higher than 46% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.0/10
010
High · v3.1 (CVE.org)
EPSS score
0.55%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 6 · Related 3
DLA-3152-1MGASA-2020-0135OPENSUSE-SU-2024:10792-1RHSA-2020:4444SUSE-SU-2020:0832-1USN-4416-1

Timeline

  1. 30-04-2020
    PublishedVulnerability first disclosed.
  2. 14-10-2026
    Last modifiedVulnerability information updated.

Description

A use-after-free vulnerability introduced in glibc upstream version 2.14 was found in the way the tilde expansion was carried out. Directory paths containing an initial tilde followed by a valid username were affected by this issue. A local attacker could exploit this flaw by creating a specially crafted path that, when processed by the glob function, would potentially lead to arbitrary code execution. This was fixed in version 2.32.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.55%

Chance of exploitation in the next 30 days

Percentile

46%

Versus all other CVEs

30-day change

Increase +0.01 pp

From 0.53% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.

Suse13 products
  • glibc&distro=HPE Helion OpenStack 8< 2.22-123.1
  • glibc&distro=SUSE Linux Enterprise High Performance Computing 15-ESPOS< 2.26-13.45.1
  • glibc&distro=SUSE Linux Enterprise High Performance Computing 15-LTSS< 2.26-13.45.1
  • glibc&distro=SUSE Linux Enterprise Module for Basesystem 15 SP1< 2.26-13.45.1
  • glibc&distro=SUSE Linux Enterprise Module for Development Tools 15 SP1< 2.26-13.45.1
Netapp5 products
Debian2 products
Opensuse2 products
  • glibc-testsuite-src&distro=openSUSE Leap 15.1< 2.26-lp151.19.11.1
  • glibc&distro=openSUSE Leap 15.1< 2.26-lp151.19.11.1
Ubuntu2 products
  • eglibcAll versions (No fix recorded)
  • glibc< 2.23-0ubuntu11.2 | < 2.27-3ubuntu1.2
Canonical1 product
Gnu1 product
Gnu libc1 product
  • glibcAffected: versions 2.14 and later | Fixed: version 2.32

8 vendors · 27 products

References

21 links
Show all 21 references