Trending
CVE-2025-0520

CVE detail

CVE-2025-0520

An unrestricted file upload vulnerability in ShowDoc caused by improper validation of file extension allows execution of arbitrary PHP, leading to remote code execution.This issue affects ShowDoc: before 2.8.7.

CVSS 9.4 · CriticalBuzz score 38.8

Buzz score

Why this CVE is surfacing

Buzz score total 38.8

This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.

Buzz score components · mention 20.8 · diversity 18.0 · KEV 0.0 · OTX 0.0 · PoC 0.0

Mention score

20.8

7 evidence mentions in the snapshot

Diversity score

18.0

5 sources across 3 categories

KEV score

0.0

No KEV entry observed

OTX score

0.0

0 OTX pulses

PoC score

0.0

0 repos · best confidence N/A

Best PoC traction

Maximum stars on a matched PoC repo

Why it matters now

Mention timeline

Total mentions: 0; within the 30d window
Peak daily: 0; highest bucket

Evidence

Source links by recency

Newest mentions first

7 source links · newest first

Security Affairs newsletter Round 573 by Pierluigi Paganini – INTERNATIONAL EDITIONSecurity Affairs
A new round of the weekly Security Affairs newsletter has arrived! Every week, the best security articles from Security Affairs are free in your email box. Enjoy a new round of the weekly SecurityAffairs newsletter, including the international press. Hidden VMs: how hackers leverage QEMU to stealthily steal data and spread malware Nexcorium Mirai variant […]
newssecurityaffairs.comApr 19, 2026, 9:32 AM
In Other News: Satellite Cybersecurity Act, $90K Chrome Flaw, Teen Hacker ArrestedSecurityWeek
Other noteworthy stories that might have slipped under the radar: ShinyHunters targets Rockstar Games, ShowDoc vulnerability exploited in the wild, and EPA to boost cybersecurity budget to $19 million.
newswww.securityweek.comApr 17, 2026, 12:00 PM
Attackers target unpatched ShowDoc servers via CVE-2025-0520Security Affairs
A critical RCE flaw, tracked as CVE-2025-0520, in ShowDoc is being actively exploited, putting unpatched servers at serious risk. A critical remote code execution flaw, tracked as CVE-2025-0520 (CVSS score of 9.4), affecting ShowDoc is under active exploitation in the wild. ShowDoc is an online tool that helps IT teams share documents and improve collaboration […]
newssecurityaffairs.comApr 14, 2026, 9:13 AM
https://www.vulncheck.com/advisories/showdoc-unauthenticated-file-upload-rcewww.vulncheck.com
No excerpt available.
Exploitwww.vulncheck.comApr 29, 2025, 8:15 PM
https://www.cnvd.org.cn/flaw/show/CNVD-2020-26585www.cnvd.org.cn
No excerpt available.
referencewww.cnvd.org.cnApr 29, 2025, 8:15 PM
https://github.com/vulhub/vulhub/tree/master/showdoc/CNVD-2020-26585github.com
No excerpt available.
Exploitgithub.comApr 29, 2025, 8:15 PM
https://github.com/star7th/showdoc/pull/1059github.com
No excerpt available.
Exploitgithub.comApr 29, 2025, 8:15 PM

Exploit code

Public exploit repository references

Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.

0 repository references · best confidence N/A · max 0 stars

No public PoC repositories have been matched yet.

Related records

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5 mentions

External lookup

Potential internet exposure

Potential exposure only — not proof of vulnerability.Shodan results indicate potentially internet-exposed products, not confirmed vulnerable systems. They do not confirm that any returned system is vulnerable to CVE-2025-0520.

Product-level CPE searches intentionally omit version fields and NVD version-range or configuration certainty. Verify the exact product version and configuration independently.

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Product CPE queries

Derived from this CVE's existing NVD CPE 2.3 records; the application, operating-system, or hardware part is retained.

Product query unavailableNo valid raw CPE 2.3 product record is available for this CVE, so no product-level Shodan query is shown.

Exact CVE query

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Shodan's exact vuln: filter is separate from the product searches above and requires an eligible paid Shodan plan.

vuln:CVE-2025-0520Search this CVE on Shodan

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Metadata

Canonical fields

NVD status

Deferred

Published

Apr 29, 2025

Modified

Jun 17, 2026

Official record

Authoritative NVD record

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CWE IDs

Vendor classifications

Unavailable

How this vector reads

CVSS 4.0 base metrics decoded below. This explanation does not recalculate or change the NVD score.

Attack Vector (AV): Network. The vulnerable system can be reached across network boundaries.
Attack Complexity (AC): Low. No special conditions beyond the attacker-controlled steps are required.
Attack Requirements (AT): None. No prerequisite deployment or execution condition is required.
Privileges Required (PR): Low. The attacker needs basic user-level privileges.
User Interaction (UI): None. Exploitation does not require a targeted user to act.
Vulnerable System Confidentiality (VC): High. There is a total or serious impact to this security property.
Vulnerable System Integrity (VI): High. There is a total or serious impact to this security property.
Vulnerable System Availability (VA): Low. There is a limited impact to this security property.
Subsequent System Confidentiality (SC): High. There is a total or serious impact to this security property.
Subsequent System Integrity (SI): High. There is a total or serious impact to this security property.
Subsequent System Availability (SA): Low. There is a limited impact to this security property.

Optional CVSS v4 metrics remain in the raw vector; only base metrics are expanded here.

Signals

Exploitation indicators

0 stored signals · no KEV · 0 OTX pulses