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No exploitation reportedFix available

CVE-2020-14315

No exploitation reported by the sources we read.

  • Published2020-09-16
  • WeaknessCWE-787

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A memory corruption vulnerability is present in bspatch as shipped in Colin Percival’s bsdiff tools version 4.3. Insufficient checks when handling external inputs allows an attacker to bypass the sanity checks in place and write out of a dynamically allocated buffer boundaries.

Timeline

dates in UTC
  1. 2020-09-1614:15CVE publishedNVD

Versions per branch

NVD
Daemonology bsdiff
BranchAffectedFixed in
4.3= 4.3no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • bsdiffUbuntu:26.10all versions · no fixed version listed
  • bsdiffUbuntu:26.04:LTSall versions · no fixed version listed
  • bsdiffUbuntu:25.10all versions · no fixed version listed
  • bsdiffUbuntu:24.04:LTSall versions · no fixed version listed
  • bsdiffUbuntu:22.04:LTSall versions · no fixed version listed
  • bsdiffUbuntu:20.04:LTSall versions · no fixed version listed
  • bsdiffUbuntu:18.04:LTSall versions · no fixed version listed
  • bsdiffUbuntu:16.04:LTSall versions · no fixed version listed

3 more package ranges on OSV.dev

Vendor advisories

  • CVE-2020-14315 Red Hat Product Security

    bsdiff: handling external inputs allows attacker to bypass sanity checks

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVSS 3.19.8read 2026-10-23
  • NVDCVSS 2.07.5read 2026-10-23
  • CNAweakness (CWE)CWE-787known since 2026-10-23
  • NVDweakness (CWE)CWE-787read 2026-10-23
  • FIRST EPSSEPSS score2.6 %2026-11-09
  • OSVaffected packages—
  • GitHub Advisoriesadvisory—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2020-09-16
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-g2hg-j8m2-ppxr

Frequently asked questions

What is CVE-2020-14315?

A memory corruption vulnerability is present in bspatch as shipped in Colin Percival’s bsdiff tools version 4.3. Insufficient checks when handling external inputs allows an attacker to bypass the sanity checks in place and write out of a dynamically allocated buffer boundaries.

Is CVE-2020-14315 actively exploited?

Active exploitation of CVE-2020-14315 has not been confirmed. Its EPSS score was 2.6% on 2026-11-09, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-14315?

CVE-2020-14315 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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