Page generated: 08 Nov 2026, 10:47 UTC
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CVE-2021-44077

Zoho ManageEngine ServiceDesk Plus before 11306, ServiceDesk Plus MSP before 10530, and SupportCenter Plus before 11014 are vulnerable to unauthenticated remote code execution. This is related to /RestAPI URLs in a servlet, and ImportTechnicians in the Struts configuration.

CVSS 9.8 (CRITICAL) KEV: KNOWN CATALOG

Attention and evidence

HYPE SCORE
0.0/10
REALITY · THREAT PRIORITY
8.9/10
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: 93.30%: +0.47

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

Sources: 11 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

Security Affairs
Press · 05 Nov 2022, 07:00 · Zero-day are exploited on a massive scale in increasingly shorter timeframes - Security Affairs
Latest Hacking News - Exploits, Vulnerabilities, Tech and Tutorials
Press · 27 Feb 2022, 08:00 · SockDetour Found As A Backup Backdoor In TiltedTemple APT Campaign - Latest Hacking News - Exploits, Vulnerabilities, Tech and Tutorials
GreyNoise
Press · 28 Jan 2022, 08:00 · Malicious Tag Roundup (January 2022) | Cybersecurity Blog - GreyNoise
GBHackers News
Press · 17 Jan 2022, 08:00 · Critical Flaw With Zoho Desktop Central Let Attackers to Bypass Authentication - GBHackers News
ZDNET
Press · 21 Dec 2021, 08:00 · FBI: Hackers are actively exploiting this flaw on ManageEngine Desktop Central servers - ZDNET
See all 11 source documents
Rapid7
Press · 07 Dec 2021, 08:00 · Active Exploitation of CVE-2021-44077 Allowing Unauthenticated RCE - Rapid7
The Record from Recorded Future News
Press · 05 Dec 2021, 08:00 · Zoho warns of new zero-day vulnerability exploited in attacks - The Record from Recorded Future News
Security Magazine
Press · 03 Dec 2021, 08:00 · CISA, FBI release alert on Zoho vulnerability - Security Magazine
The HIPAA Journal
Press · 03 Dec 2021, 08:00 · APT Actors Exploiting Zoho ManageEngine ServiceDesk Plus to Deliver Webshells - The HIPAA Journal
The Hacker News
Press · 03 Dec 2021, 08:00 · CISA Warns of Actively Exploited Critical Zoho ManageEngine ServiceDesk Vulnerability - The Hacker News
Unit 42
Press · 02 Dec 2021, 08:00 · APT Expands Attack on ManageEngine With Active Campaign Against ServiceDesk Plus - Unit 42

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 8.9 (2026-11-02 15:12). The curve appears once the score changes.

Public exploit evidence

1

Public exploit entries / repo candidates

See 1 repos with metrics
RepositoryStarsForksLanguageUpdated
pizza-power/Golang-CVE-2021-44077-POC20Go02 Oct 2022, 19:35
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 93.3%
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 13:58:32.072469+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline
Published
29 Nov 2021, 03:17
Added to the CISA KEV catalog
01 Dec 2021, 00:00
First press mention
02 Dec 2021, 08:00
Latest press mention
05 Nov 2022, 07:00
Score calculated
05 Nov 2026, 13:58
PoCs on GitHub
1 repositories