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Page generated: 08 Nov 2026, 08:43 UTC

CVE-2020-2555

Read full description

Vulnerability in the Oracle Coherence product of Oracle Fusion Middleware (component: Caching,CacheStore,Invocation). Supported versions that are affected are 3.7.1.0, 12.1.3.0.0, 12.2.1.3.0 and 12.2.1.4.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via T3 to compromise Oracle Coherence. Successful attacks of this vulnerability can result in takeover of Oracle Coherence. CVSS 3.0 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

CVSS 9.8 (CRITICAL) KEV: KNOWN CATALOG

Attention and evidence

HYPE SCORE

0.0/10

REALITY · THREAT PRIORITY

9.0/10

General review priority; not probability

Evidence confidence: Exploitation recorded

Why this priority?

Recorded exploitation baseline: +7.00
Technical severity: CVSS 9.8: +1.47
Fresh EPSS: 97.12%: +0.49

General review priority, not probability, victim count or asset-specific risk. A range covers missing CVSS/EPSS inputs within the current evidence state.

Sources: 5 documents and public datasets.

Hype components

Headline sample (25%)

0/100

Press, 30 days (60%)

0/100

Grounded branding (15%)

0/100

HYPE TOTAL0/100

Sources and documents

Qualys

Press · 22 Feb 2022, 08:00 · Managing CISA Known Exploited Vulnerabilities with Qualys VMDR - Qualys

www.trendmicro.com

Press · 28 Apr 2021, 07:00 · Manage Zero Day Exploits (ZDI) with Trend Micro Solutions - www.trendmicro.com

BleepingComputer

Press · 20 Oct 2020, 07:00 · NSA: Top 25 vulnerabilities actively abused by Chinese hackers - BleepingComputer

thezdi.com

Press · 11 May 2020, 07:00 · Details on the Oracle WebLogic Vulnerability Being Exploited in the Wild - thezdi.com

thezdi.com

Press · 05 Mar 2020, 08:00 · CVE-2020-2555: RCE Through a Deserialization Bug in Oracle’s WebLogic Server - thezdi.com

Score evolution

● Hype ● Reality

Earlier evidence-support scores are retained in history; this chart shows only the current priority definition.

First record: hype 0.0 · reality 9.0 (2026-11-02 15:12). The curve appears once the score changes.

Public exploit evidence

Public exploit entries / repo candidates

See 4 repos with metrics

Repository	Stars	Forks	Language	Updated
zhzyker/exphub	4,293	1,078	Python	04 Apr 2021, 09:13
zzwlpx/weblogicPoc	89	24	Python	07 Aug 2022, 06:36
wsfengfan/CVE-2020-2555	45	22	Java	16 Apr 2020, 12:04
Qynklee/POC_CVE-2020-2555	1	1	Java	15 Nov 2021, 09:16

Public exploit evidence

exploitdb #48320 2020-04-14
exploitdb #48508 2020-05-22

Evidence context and dated references

Reality is general threat/review priority, combining observed exploitation, CVSS severity and fresh EPSS. Evidence confidence is separate. This is not calibrated risk, a victim count or an asset-specific assessment. A range reflects missing numeric inputs.

Evidence in context

Confidence in exploitation evidence: Exploitation recorded
Priority basis: Recorded exploitation; CVSS 9.8; EPSS 97.1%
Attention, last 30 days: 0 distinct story titles; 0 press documents; 0 publisher domains.
Technical potential: network access, no prior privileges, no user interaction.
Observed activity: Exploitation recorded in CISA KEV.
Known scale: Not quantified.
Evidence confidence basis: Trusted exploitation confirmation

Score evaluated: 2026-11-05 13:58:16.425062+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline

Published

15 Jan 2020, 16:34

First press mention

05 Mar 2020, 08:00

Added to the CISA KEV catalog

03 Nov 2021, 00:00

Latest press mention

22 Feb 2022, 08:00

Score calculated

05 Nov 2026, 13:58

PoCs on GitHub

4 repositories