CVE-2021-32824

CRITICALNVD 9.89.8
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2023-01-03. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Elevated

Also known asEUVD-2023-0460 (ENISA EUVD) · GHSA-fprr-rrm8-4534 (GitHub Security Advisories)Source: ENISA EUVD

9.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 3.4%CVSS: 9.8Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

Apache Dubbo is a java based, open source RPC framework. Versions prior to 2.6.10 and 2.7.10 are vulnerable to pre-auth remote code execution via arbitrary bean manipulation in the Telnet handler. The Dubbo main service port can be used to access a Telnet Handler which offers some basic methods to collect information about the providers and methods exposed by the service and it can even allow to shutdown the service. This endpoint is unprotected. Additionally, a provider method can be invoked using the invoke handler. This handler uses a safe version of FastJson to process the call arguments. However, the resulting list is later processed with PojoUtils.realize which can be used to instantiate arbitrary classes and invoke its setters. Even though FastJson is properly protected with a default blocklist, PojoUtils.realize is not, and an attacker can leverage that to achieve remote code execution. Versions 2.6.10 and 2.7.10 contain fixes for this issue.

CVSS v3
9.8
EG Score
9.8CRITICALmedium confidence
EG Risk
75
EG Risk 75/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity98% × 45%
Impact severity (EG Severity): CVSS 9.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low, Track* at medium and Attend at high mission impact.
Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
3.4%
EPSS %ILE
89th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (9.8): severity, escalated by confirmed exploitation. This CVE's 9.8 is its impact severity (EG Severity), not escalated.

EG Severity
9.8 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
3.4% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-12). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track* at medium mission impactTrack at low, Track* at medium and Attend at high mission impact.CISA BOD 26-04: 3 days if the affected system is publicly exposed; 60 days if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low, Track* at medium and Attend at high mission impact.

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)3 days if the affected system is publicly exposed; 60 days if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

January 3, 2023

Last Modified

November 21, 2024

Advisory Details (1)

Auto-updated Oct 3, 2026
Patch available. Sources: github.
GitHub advisory

GHSL-2021-034_043: Multiple pre-auth RCEs in Apache Dubbo - CVE-2021-25641, CVE-2021-30179, CVE-2021-30180, CVE-2021-30181, CVE-2021-32824 | GitHub Security Lab

https://securitylab.github.com/advisories/GHSL-2021-034_043-apache-dubbo/

Vendor Advisories for CVE-2021-32824(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(2)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
mavenorg.apache.dubbo:dubbo-parent @ 2.6.10 (fixes < 2.6.10)—ghsa
mavenorg.apache.dubbo:dubbo-parent @ 2.7.10 (fixes >= 2.7.0, < 2.7.10)—ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)
Maven(1)
PackageVulnerable rangeFix by version rangeDependents
org.apache.dubbo:dubbo-parent2.7.0 ... 2.7.9 (11 versions)
  • every version up to 2.6.10: fixed in 2.6.10
  • 2.7.0 up to 2.7.10: fixed in 2.7.10
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 15× in last 7d / 45× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed its CVE.org record (CNA or CISA ADP). An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.

Showing the most recent 100 of 264 rows on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 164 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-13 16:40 UTCEPSS rescoreEPSS 3.4% · 89th percentile
  2. 2026-11-13 12:57 UTCEchelonGraph re-scored
  3. 2026-11-13 12:57 UTCGHSA enrichmentGHSA-fprr-rrm8-4534 · GitHub severity CRITICAL · GitHub CVSS 9.8
  4. 2026-11-12 16:29 UTCEPSS rescoreEPSS 3.4% · 89th percentile
  5. 2026-11-12 15:18 UTCGHSA enrichmentGHSA-fprr-rrm8-4534 · GitHub severity CRITICAL · GitHub CVSS 9.8
  6. 2026-11-11 17:40 UTCEchelonGraph re-scored
  7. 2026-11-11 17:40 UTCGHSA enrichmentGHSA-fprr-rrm8-4534 · GitHub severity CRITICAL · GitHub CVSS 9.8
  8. 2026-11-11 16:31 UTCEPSS rescoreEPSS 3.4% · 89th percentile
  9. 2026-11-10 20:01 UTCEchelonGraph re-scored
  10. 2026-11-10 20:01 UTCGHSA enrichmentGHSA-fprr-rrm8-4534 · GitHub severity CRITICAL · GitHub CVSS 9.8
  11. 2026-11-10 16:35 UTCEPSS rescoreEPSS 3.4% · 88th percentile
  12. 2026-11-09 22:19 UTCEchelonGraph re-scored
  13. 2026-11-09 22:19 UTCGHSA enrichmentGHSA-fprr-rrm8-4534 · GitHub severity CRITICAL · GitHub CVSS 9.8
  14. 2026-11-09 16:29 UTCEPSS rescoreEPSS 3.4% · 88th percentile
  15. 2026-11-09 00:39 UTCEchelonGraph re-scored
  16. 2026-11-09 00:39 UTCGHSA enrichmentGHSA-fprr-rrm8-4534 · GitHub severity CRITICAL · GitHub CVSS 9.8
  17. 2026-11-08 16:33 UTCEPSS rescoreEPSS 3.4% · 88th percentile
  18. 2026-11-08 03:01 UTCEchelonGraph re-scored
  19. 2026-11-08 03:01 UTCGHSA enrichmentGHSA-fprr-rrm8-4534 · GitHub severity CRITICAL · GitHub CVSS 9.8
  20. 2026-11-07 16:33 UTCEPSS rescoreEPSS 3.4% · 88th percentile
  21. 2026-11-07 05:23 UTCEchelonGraph re-scored
  22. 2026-11-07 05:23 UTCGHSA enrichmentGHSA-fprr-rrm8-4534 · GitHub severity CRITICAL · GitHub CVSS 9.8
  23. 2026-11-06 16:30 UTCEPSS rescoreEPSS 3.4% · 88th percentile
  24. 2026-11-06 07:45 UTCEchelonGraph re-scored
  25. 2026-11-06 07:45 UTCGHSA enrichmentGHSA-fprr-rrm8-4534 · GitHub severity CRITICAL · GitHub CVSS 9.8
Show 75 more
  1. 2026-11-05 16:30 UTCEPSS rescoreEPSS 3.4% · 88th percentile
  2. 2026-11-05 10:08 UTCEchelonGraph re-scored
  3. 2026-11-05 10:08 UTCGHSA enrichmentGHSA-fprr-rrm8-4534 · GitHub severity CRITICAL · GitHub CVSS 9.8
  4. 2026-11-04 16:29 UTCEPSS rescoreEPSS 3.4% · 88th percentile
  5. 2026-11-04 12:26 UTCEchelonGraph re-scored
  6. 2026-11-04 12:26 UTCGHSA enrichmentGHSA-fprr-rrm8-4534 · GitHub severity CRITICAL · GitHub CVSS 9.8
  7. 2026-11-03 18:25 UTCOSV refresh
  8. 2026-11-03 16:38 UTCEPSS rescoreEPSS 3.4% · 88th percentile
  9. 2026-11-03 14:48 UTCGHSA enrichmentGHSA-fprr-rrm8-4534 · GitHub severity CRITICAL · GitHub CVSS 9.8
  10. 2026-11-02 16:57 UTCEchelonGraph re-scored
  11. 2026-11-02 16:57 UTCGHSA enrichmentGHSA-fprr-rrm8-4534 · GitHub severity CRITICAL · GitHub CVSS 9.8
  12. 2026-11-02 16:37 UTCEPSS rescoreEPSS 3.2% · 88th percentile
  13. 2026-11-01 19:18 UTCEchelonGraph re-scored
  14. 2026-11-01 19:18 UTCGHSA enrichmentGHSA-fprr-rrm8-4534 · GitHub severity CRITICAL · GitHub CVSS 9.8
  15. 2026-11-01 08:32 UTCGHSA enrichmentGHSA-fprr-rrm8-4534 · GitHub severity CRITICAL · GitHub CVSS 9.8
  16. 2026-11-01 08:32 UTCEchelonGraph re-scored
  17. 2026-10-31 21:39 UTCEchelonGraph re-scored
  18. 2026-10-31 16:28 UTCEPSS rescoreEPSS 3.2% · 88th percentile
  19. 2026-10-31 00:02 UTCEchelonGraph re-scored
  20. 2026-10-30 16:30 UTCEPSS rescoreEPSS 3.2% · 88th percentile
  21. 2026-10-30 02:24 UTCEchelonGraph re-scored
  22. 2026-10-29 16:29 UTCEPSS rescoreEPSS 3.2% · 88th percentile
  23. 2026-10-29 04:47 UTCEchelonGraph re-scored
  24. 2026-10-28 16:28 UTCEPSS rescoreEPSS 3.2% · 88th percentile
  25. 2026-10-28 07:02 UTCEchelonGraph re-scored
  26. 2026-10-27 16:28 UTCEPSS rescoreEPSS 3.2% · 88th percentile
  27. 2026-10-27 09:24 UTCEchelonGraph re-scored
  28. 2026-10-26 16:28 UTCEPSS rescoreEPSS 3.2% · 88th percentile
  29. 2026-10-26 11:32 UTCEchelonGraph re-scored
  30. 2026-10-25 16:28 UTCEPSS rescoreEPSS 3.2% · 88th percentile
  31. 2026-10-25 13:55 UTCEchelonGraph re-scored
  32. 2026-10-24 16:28 UTCEPSS rescoreEPSS 3.0% · 87th percentile
  33. 2026-10-23 18:19 UTCEchelonGraph re-scored
  34. 2026-10-23 16:28 UTCEPSS rescoreEPSS 3.0% · 87th percentile
  35. 2026-10-22 20:22 UTCEchelonGraph re-scored
  36. 2026-10-22 16:29 UTCEPSS rescoreEPSS 3.0% · 87th percentile
  37. 2026-10-21 22:22 UTCEchelonGraph re-scored
  38. 2026-10-21 16:28 UTCEPSS rescoreEPSS 3.0% · 87th percentile
  39. 2026-10-21 00:43 UTCEchelonGraph re-scored
  40. 2026-10-20 16:28 UTCEPSS rescoreEPSS 3.0% · 87th percentile
  41. 2026-10-20 02:57 UTCEchelonGraph re-scored
  42. 2026-10-19 16:28 UTCEPSS rescoreEPSS 3.0% · 87th percentile
  43. 2026-10-19 03:07 UTCEchelonGraph re-scored
  44. 2026-10-18 16:28 UTCEPSS rescoreEPSS 3.0% · 87th percentile
  45. 2026-10-18 05:27 UTCEchelonGraph re-scored
  46. 2026-10-17 16:29 UTCEPSS rescoreEPSS 3.0% · 87th percentile
  47. 2026-10-17 07:16 UTCEchelonGraph re-scored
  48. 2026-10-16 16:33 UTCEPSS rescoreEPSS 3.0% · 87th percentile
  49. 2026-10-16 09:02 UTCEchelonGraph re-scored
  50. 2026-10-15 16:28 UTCEPSS rescoreEPSS 3.0% · 86th percentile
  51. 2026-10-15 08:19 UTCEchelonGraph re-scored
  52. 2026-10-14 16:28 UTCEPSS rescoreEPSS 3.0% · 86th percentile
  53. 2026-10-14 04:37 UTCEchelonGraph re-scored
  54. 2026-10-13 16:28 UTCEPSS rescoreEPSS 2.8% · 86th percentile
  55. 2026-10-12 19:16 UTCEchelonGraph re-scored
  56. 2026-10-12 16:29 UTCEPSS rescoreEPSS 2.8% · 86th percentile
  57. 2026-10-11 23:41 UTCEchelonGraph re-scored
  58. 2026-10-11 13:43 UTCEPSS rescoreEPSS 2.8% · 86th percentile
  59. 2026-10-10 19:56 UTCEPSS rescoreEPSS 2.8% · 86th percentile
  60. 2026-10-09 20:04 UTCEPSS rescoreEPSS 2.8% · 86th percentile
  61. 2026-10-08 16:39 UTCEPSS rescoreEPSS 2.8% · 86th percentile
  62. 2026-10-07 23:44 UTCEPSS rescoreEPSS 2.8% · 86th percentile
  63. 2026-10-06 15:14 UTCEPSS rescoreEPSS 2.8% · 86th percentile
  64. 2026-10-05 17:40 UTCEPSS rescoreEPSS 2.8% · 86th percentile
  65. 2026-10-04 23:19 UTCEPSS rescoreEPSS 2.8% · 86th percentile
  66. 2026-10-03 14:22 UTCEPSS rescoreEPSS 2.8% · 86th percentile
  67. 2026-10-01 19:46 UTCEPSS rescoreEPSS 2.8% · 86th percentile
  68. 2026-09-30 15:36 UTCEchelonGraph re-scored
  69. 2026-09-30 15:00 UTCEPSS rescoreEPSS 2.8% · 86th percentile
  70. 2026-09-29 15:15 UTCEPSS rescoreEPSS 2.8% · 86th percentile
  71. 2026-09-28 13:47 UTCEPSS rescoreEPSS 2.8% · 86th percentile
  72. 2026-09-27 13:41 UTCEPSS rescoreEPSS 2.8% · 86th percentile
  73. 2026-09-26 15:54 UTCEPSS rescoreEPSS 2.8% · 86th percentile
  74. 2026-09-26 00:21 UTCEPSS rescoreEPSS 2.8% · 86th percentile
  75. 2026-09-24 14:00 UTCEPSS rescoreEPSS 2.8% · 86th percentile

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Same product

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Maven:org.apache.dubbo:dubbo-parent

Frequently asked(5)

What is CVE-2021-32824?
CVE-2021-32824 is a critical-severity vulnerability; its CVE record was published on January 3, 2023. Apache Dubbo is a java based, open source RPC framework. Versions prior to 2.6.10 and 2.7.10 are vulnerable to pre-auth remote code execution via arbitrary bean manipulation in the Telnet handler. The Dubbo main service port can be used to access a Telnet Handler which offers some basic methods to…
When was the CVE record for CVE-2021-32824 published?
The CVE record for CVE-2021-32824 was published on January 3, 2023. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of November 21, 2024; the record at its source may have been updated since.
Is CVE-2021-32824 actively exploited?
CVE-2021-32824 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 3.4% probability of exploitation in the next 30 days (89th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2021-32824?
CVE-2021-32824 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2021-32824?
A fix for CVE-2021-32824 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2021-32824 are linked in the Vendor Advisories panel on this page.

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