CVE-2025-54001Disclosure

LOWCVSS 9.8 · CRITICAL

Exploit discussion active in current signal (1 latest mentions)

Immediate actions

Hunt for exploitation attempts and persistence artifacts
Increase monitoring for publicly documented tradecraft
Track advisory updates for patch or workaround availability

Recommended action window: High priority (within 72h)

NVD description

Deserialization of Untrusted Data vulnerability in ThemeREX Classter classter allows Object Injection.This issue affects Classter: from n/a through <= 2.5.

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1.5/ 10 priority

Sources & remediation

Other references

https://patchstack.com/database/Wordpress/Theme/classter/vulnerability/wordpress-classter-theme-2-5-php-object-injection-vulnerability?_s_id=cve

Weakness type (CWE)

CWE-502

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

NONE

Momentum

STABLE

Threat summary

Public PoC is present in monitored signal
2 mentions across 2 observed days
Momentum state: stable

What's happening

PoC mentioned or linked in 1 signal
Technical details provided in 2 signals
Disclosure: 2 classified signals
Peaked 1d ago at 1 mentions (2026-03-05); latest day: 1
2 total mentions across 2 days

Deep dive

Activity timeline2 mentions / 2d

Signal classification1 categories

Disclosure

2100.0%

Referenced assets2 URLs

By indicator

Full discourse2 posts

CVE@CVEnew215d
Disclosure
CVE-2025-54001 Deserialization of Untrusted Data vulnerability in ThemeREX Classter classter allows Object Injection.This issue affects Classter: from n/a through <= 2.5. https://www.cve.org/CVERecord?id=CVE-2025-54001
Post summary
CVE-2025-54001 is a deserialization vulnerability in ThemeREX Classter that allows object injection, affecting versions up to 2.5.
00000197
56.6K followersView on X
The Hacker Wire@TheHackerWire218d
Disclosure
🔴 CVE-2025-54001 - Critical Deserialization of Untrusted Data vulnerability in ThemeREX Classter classter allows Object Injection.This issue affects Classter: from n/a through &lt;= 2.5. https://www.thehackerwire.com/vulnerability/CVE-2025-54001/ https://t.co/3lAxl9fXFz
Post summary
The tweet announces a critical deserialization and object injection vulnerability (CVE-2025-54001) in ThemeREX Classter affecting versions up to 2.5, providing technical details but no explicit exploit or patch information.
0000072
124 followersView on X

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