Vulnerability · CVE-2020-1751
An out-of-bounds write vulnerability was found in glibc before 2.31 when handling signal trampolines on PowerPC.
Published Apr 17, 2020 · catalog updated Oct 14, 2026 · An out-of-bounds write vulnerability
Check if you run it
No confirmed exploitation is on record for CVE-2020-1751. EPSS is 0.54%. Act only if a listed version of An out-of-bounds write vulnerability is installed.
Gaps on this record
- The stored product name is a package slug. The name on this page is taken from the title (An out-of-bounds write vulnerability).
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
- Severity
- High7.0
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 0.54%
- Remediation
- Advisory link
- Affected products
- cpe canonical/ubuntu linux · cpe gnu/glibc · cpe redhat/enterprise linux
An out-of-bounds write vulnerability was found in glibc before 2.31 when handling signal trampolines on PowerPC. Specifically, the backtrace function did not properly check the array bounds when storing the frame address, resulting in a denial of service or potential code execution. The highest threat from this vulnerability is to system availability.
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- cpe canonical/ubuntu linux16.04
- cpe canonical/ubuntu linux18.04
- cpe canonical/ubuntu linux19.10
- cpe gnu/glibcversion unspecified
- cpe redhat/enterprise linux8.0
How to fix CVE-2020-1751
Recommended remediation
A patch or advisory reference is linked. Open the original publisher for availability by product version.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
No confirmed exploitation is on record for CVE-2020-1751. EPSS is 0.54%. Act only if a listed version of An out-of-bounds write vulnerability is installed.
Which versions are affected?
Compare what you have installed with canonical/ubuntu linux 16.04; canonical/ubuntu linux 18.04; canonical/ubuntu linux 19.10; redhat/enterprise linux 8.0. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
CWE-787: Out-of-bounds Write. EPSS 0.54%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Apr 17, 2020 · NIST NVD
Detected
An out-of-bounds write vulnerability was found in glibc before 2.31 when handling signal trampolines on PowerPC. Specifically, the backtrace function did not properly check the array bounds when storing the frame address, resulting in a denial of service or potential code execution. The highest threat from this vulnerability is to system availability.
Oct 14, 2026 · NIST NVD
Updated
An out-of-bounds write vulnerability was found in glibc before 2.31 when handling signal trampolines on PowerPC. Specifically, the backtrace function did not properly check the array bounds when storing the frame address, resulting in a denial of service or potential code execution. The highest threat from this vulnerability is to system availability.
Sources
- CVE.orgVulnerability recordCVE-2020-1751
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2020-1751
30-day exploitation probability 0.5%
first.org - NIST NVDVulnerability recordCVE-2020-1751
An out-of-bounds write vulnerability was found in glibc before 2.31 when handling signal trampolines on PowerPC. Specifically, the backtrace function did not properly check the array bounds when storing the frame address, resulting in a denial of service or potential code executi
nvd.nist.gov
References
Freshness
Last verified in this catalog Oct 16, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.