HOMEVULNERABILITIESCVE-2020-27514
CRITICAL

CVE-2020-27514

CWE-22Published: August 11, 2023· Updated: Jun 17, 2026

9.1
CVSS v3.1

Official Description

Directory Traversal vulnerability in delete function in admin.api.TemplateController in ZrLog version 2.1.15, allows remote attackers to delete arbitrary files and cause a denial of service (DoS).

NVD Source

Risk Analysis

ZrLog is affected by a directory traversal vulnerability that allows remote attackers to delete arbitrary files, leading to a denial of service. This critical vulnerability is rated 9.1.

No public exploit is known, and it is not in the CISA KEV. The vulnerability is remotely exploitable with low complexity.

Recommended Action

Update ZrLog to a version that remediates the directory traversal flaw in the TemplateController.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2020-27514 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.1.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Affected Vendors & Products

zrlog1 product(s)
zrlog
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
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All References (2)

Quick Facts

CVE IDCVE-2020-27514
CVSS Score9.1 / 10
SeverityCRITICAL
WeaknessCWE-22
CISA KEVNo
Affected1 vendor(s)
PublishedAug 11, 2023

Related CVEs (CWE-22)

Recommended Actions

  • Apply vendor patches immediately
  • Monitor CVE-2020-27514 in threat intel feeds
  • Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.