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Public proof of conceptFix available

CVE-2020-7595

A public proof of concept exists; no exploitation attested.

  • Published2020-01-21
  • WeaknessCWE-835

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

xmlStringLenDecodeEntities in parser.c in libxml2 2.9.10 has an infinite loop in a certain end-of-file situation.

Timeline

dates in UTC
  1. 2020-01-2123:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2020-7595?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-7595?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Canonical ubuntu linux
BranchAffectedFixed in
12.4= 12.04no fix published
14.4= 14.04no fix published
16.4= 16.04no fix published
18.4= 18.04no fix published
19.10= 19.10no fix published
Fedoraproject fedora
BranchAffectedFixed in
30.x= 30no fix published
31.x= 31no fix published
32.x= 32no fix published
Oracle real user experience insight
BranchAffectedFixed in
13.3= 13.3.1.0no fix published
13.4= 13.4.1.0no fix published
13.5= 13.5.1.0no fix published

21 more products in the sources.

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.

Vendor advisories

  • ICSA-21-103-08 CISA1 known affected

    Siemens SINEMA Remote Connect Server

    SINEMA Remote Connect Server

Full record on NVD

Fix

  1. Vendor fix CISA ICSA-21-103-08 · 1 productUpdate to V3.0

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub

Sources

  • CISA-ADPSSVC decisionpoc2025-12-03
  • OpenCVESSVC decisionpoc—
  • CISA-ADPCVSS 3.17.52025-12-03
  • NVDCVSS 3.17.5read 2026-10-23
  • NVDCVSS 2.05read 2026-10-23
  • CISA-ADPweakness (CWE)CWE-8352025-12-03
  • NVDweakness (CWE)CWE-835read 2026-10-23
  • FIRST EPSSEPSS score7.8 %2026-10-22

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2020-01-21
Last Modified
2026-10-14
NVD status
Modified

Frequently asked questions

What is CVE-2020-7595?

xmlStringLenDecodeEntities in parser.c in libxml2 2.9.10 has an infinite loop in a certain end-of-file situation.

Is CVE-2020-7595 actively exploited?

A proof-of-concept exploit exists for CVE-2020-7595, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2020-7595?

CVE-2020-7595 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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