CVE-2025-67721

HIGHNVD 7.57.5
EchelonGraph scoreMEDIUM confidence

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

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.5% (44th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, NVD CVSS v3
Trending — 3 sources updated this week

Also known asEUVD-2025-203174 (ENISA EUVD) · GHSA-vx9q-rhv9-3jvg (GitHub Security Advisories)Source: ENISA EUVD

7.5EG
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).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 7.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Aircompressor is a library with ports of the Snappy, LZO, LZ4, and Zstandard compression algorithms to Java. In versions 3.3 and below, incorrect handling of malformed data in Java-based decompressor implementations for Snappy and LZ4 allow remote attackers to read previous buffer contents via crafted compressed input. With certain crafted compressed inputs, elements from the output buffer can end up in the uncompressed output, potentially leaking sensitive data. This is relevant for applications that reuse the same output buffer to uncompress multiple inputs. This can be the case of a web server that allocates a fix-sized buffer for performance purposes. There is similar vulnerability in GHSA-cmp6-m4wj-q63q. This issue is fixed in version 3.4.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
49
EG Risk 49/100

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)
Severity75% × 45%
Impact severity (EG Severity): CVSS 7.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.5% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (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
0.5%
EPSS %ILE
44th
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 (7.5): severity, escalated by confirmed exploitation. This CVE's 7.5 is its impact severity (EG Severity), not escalated.

EG Severity
7.5 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
EG Likelihood
0.5% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-31). 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 or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 14 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 or medium mission impact; Attend at high (mission-essential systems).

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

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (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)14 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 partial (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

December 12, 2025

Last Modified

October 7, 2026

Advisory Details (3)

Auto-updated Aug 8, 2026
Patch available. Sources: github, github_commit.
GitHub advisoryMentions a patch (unverified)

Snappy and LZ4 Java-based decompressor implementation can leak information from reused output buffer · Advisory · airlift/aircompressor · GitHub

https://github.com/airlift/aircompressor/security/advisories/GHSA-vx9q-rhv9-3jvg
GitHub commit Patch Available

commit ff12c4d5757c (airlift/aircompressor)

Patch available: airlift/aircompressor 3.5 (contains commit ff12c4d5757c)

https://github.com/airlift/aircompressor/commit/ff12c4d5757c9d6d1de3d39a10402f1f84f9b765
GitHub commit Patch Available

commit f2b489b39877 (airlift/aircompressor)

Patch available: airlift/aircompressor 3.5 (contains commit f2b489b39877)

https://github.com/airlift/aircompressor/commit/f2b489b398779b40c1ee29ddb11d7edef54ddc15

Patch Availability(2)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
mavenio.airlift:aircompressor @ 2.0.3 (fixes < 2.0.3)—ghsa
mavenio.airlift:aircompressor-v3 @ 3.4 (fixes < 3.4)—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

(2 across 1 ecosystem)
Maven(2)
PackageVulnerable rangeFix by version rangeDependents
io.airlift:aircompressor0.10 ... 2.0.2 (28 versions)
  • every version up to 2.0.3: fixed in 2.0.3
—
io.airlift:aircompressor-v33.0, 3.1, 3.2, 3.3
  • every version up to 3.4: fixed in 3.4
—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 41× 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 it from the CNA feed. 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). Most recent first.

Showing the most recent 99 of 197 refreshes 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. 1 repeat row among the latest 100 is merged into the row it repeats. The 98 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-01 16:33 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  2. 2026-11-01 08:01 UTCGHSA enrichmentGHSA-vx9q-rhv9-3jvg · GitHub severity HIGH
  3. 2026-11-01 08:01 UTCEG score recompute
  4. 2026-10-31 16:31 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  5. 2026-10-30 20:46 UTCEG score recompute
  6. 2026-10-30 16:33 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  7. 2026-10-29 16:32 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  8. 2026-10-28 16:30 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  9. 2026-10-27 16:30 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  10. 2026-10-26 16:30 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  11. 2026-10-25 16:31 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  12. 2026-10-25 16:07 UTCEG score recompute
  13. 2026-10-24 16:31 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  14. 2026-10-24 09:51 UTCEG score recompute
  15. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  16. 2026-10-22 16:33 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  17. 2026-10-21 16:31 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  18. 2026-10-20 16:31 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  19. 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  20. 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  21. 2026-10-18 05:18 UTCEG score recompute
  22. 2026-10-17 22:55 UTCEG score recompute
  23. 2026-10-17 16:33 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  24. 2026-10-16 16:39 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  25. 2026-10-15 16:31 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
Show 74 more
  1. 2026-10-14 16:31 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  2. 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  3. 2026-10-12 16:47 UTCEG score recompute
  4. 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  5. 2026-10-11 20:22 UTCEG score recompute
  6. 2026-10-11 18:34 UTCEG score recompute
  7. 2026-10-11 15:09 UTCEG score recompute
  8. 2026-10-11 13:47 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  9. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  10. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  11. 2026-10-08 17:11 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  12. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  13. 2026-10-07 20:26 UTCEG score recompute
  14. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  15. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  16. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  17. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  18. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  19. 2026-10-01 16:14 UTCEG score recompute
  20. 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  21. 2026-09-29 15:20 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  22. 2026-09-28 13:50 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  23. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  24. 2026-09-24 14:02 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  25. 2026-09-23 13:47 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  26. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  27. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  28. 2026-09-17 19:30 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  29. 2026-09-16 14:07 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  30. 2026-09-16 05:14 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  31. 2026-09-15 03:10 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  32. 2026-09-14 08:50 UTCOSV refresh
  33. 2026-09-13 16:46 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  34. 2026-09-12 15:00 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  35. 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  36. 2026-09-11 09:36 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  37. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  38. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  39. 2026-09-07 16:00 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  40. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  41. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  42. 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  43. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  44. 2026-08-30 01:21 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  45. 2026-08-28 21:40 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  46. 2026-08-27 14:24 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  47. 2026-08-26 14:45 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  48. 2026-08-26 10:02 UTCOSV refresh
  49. 2026-08-25 13:48 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  50. 2026-08-24 14:16 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  51. 2026-08-23 00:18 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  52. 2026-08-21 23:48 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  53. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  54. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  55. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  56. 2026-08-17 13:46 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  57. 2026-08-16 14:55 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  58. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  59. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  60. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  61. 2026-08-12 13:50 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  62. 2026-08-11 13:42 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  63. 2026-08-10 23:59 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  64. 2026-08-10 00:00 UTCEG score recompute
  65. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  66. 2026-08-08 16:36 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  67. 2026-08-08 06:49 UTCEG score recompute
  68. 2026-08-07 16:27 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  69. 2026-08-06 13:46 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  70. 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  71. 2026-08-04 10:37 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  72. 2026-08-03 10:35 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  73. 2026-08-02 02:26 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  74. 2026-08-01 04:15 UTCEPSS rescoreEPSS 0.4% · 30th percentile

Related CVEs(same product + same CWE)

Same product

1 shown

Maven:io.airlift:aircompressor

Frequently asked(5)

What is CVE-2025-67721?
CVE-2025-67721 is a high-severity vulnerability; its CVE record was published on December 12, 2025. Aircompressor is a library with ports of the Snappy, LZO, LZ4, and Zstandard compression algorithms to Java. In versions 3.3 and below, incorrect handling of malformed data in Java-based decompressor implementations for Snappy and LZ4 allow remote attackers to read previous buffer contents via…
When was the CVE record for CVE-2025-67721 published?
The CVE record for CVE-2025-67721 was published on December 12, 2025. 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 October 7, 2026; the record at its source may have been updated since.
Is CVE-2025-67721 actively exploited?
CVE-2025-67721 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (44th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2025-67721?
CVE-2025-67721 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2025-67721?
A fix for CVE-2025-67721 is available: update to the fixed version the vendor names in its advisory.

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