CVE-2012-2098

MEDIUMCVSS v2 · 5.05.0—
EchelonGraph scoreLOW confidence

This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 5.0 — v2 rates that MEDIUM (v2 bands: LOW 0.0–3.9 / MEDIUM 4.0–6.9 / HIGH 7.0–10.0; v2 has no CRITICAL band). Vector AV:N/AC:L/Au:N/C:N/I:N/A:P. CVSS v2 is an older, coarser metric than v3.1/v4.0 (no Scope, no User Interaction, no Attack Requirements), so it is not directly comparable to a v3 or v4 score. NVD has never re-scored this record under v3. EPSS predicts 12.6% exploitation probability in the next 30 days, which is reflected in EG Risk but does not lift the v2 base. Confidence: LOW.

Sources: epss, nvd_v2
Trending — 3 sources updated this weekElevated
5.0EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 13%CVSS v2: 5.0Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Algorithmic complexity vulnerability in the sorting algorithms in bzip2 compressing stream (BZip2CompressorOutputStream) in Apache Commons Compress before 1.4.1 allows remote attackers to cause a denial of service (CPU consumption) via a file with many repeating inputs.

CVSS v2.0 (legacy)
5.0MEDIUMNVD never assigned a CVSS v3 rating to this CVE
EG Score
5.0(low)
EG Risk
43(Track)
EG Risk 43/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity50% × 45%
Exploitation40% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
13%
EPSS %ILE
96%
KEV
Not listed

Published

June 29, 2012

Last Modified

April 29, 2026

References (36)

Affected Packages

(1 across 1 ecosystem)
Maven(1)
PackageVulnerable rangeFixed inDependents
org.apache.commons:commons-compress1.0, 1.1, 1.2, 1.3, 1.41.4.1—

Data Freshness Timeline

(refreshed 12× in last 7d / 34× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

Showing the most recent 100 of 102 total refreshes for this CVE.

  1. 2026-07-26 13:45 UTCEG score recompute▲ 5.00
  2. 2026-07-25 14:12 UTCEPSS rescore
  3. 2026-07-23 14:14 UTCEPSS rescore
  4. 2026-07-23 01:07 UTCEG score recompute
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  7. 2026-07-22 19:20 UTCOSV refresh
  8. 2026-07-22 14:04 UTCEPSS rescore
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  1. 2026-07-06 02:19 UTCEPSS rescore
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  25. 2026-06-17 01:43 UTCOSV refresh
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  55. 2026-05-29 04:08 UTCEG score recompute
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Frequently asked(4)

What is CVE-2012-2098?
CVE-2012-2098 is a medium vulnerability published on June 29, 2012. Algorithmic complexity vulnerability in the sorting algorithms in bzip2 compressing stream (BZip2CompressorOutputStream) in Apache Commons Compress before 1.4.1 allows remote attackers to cause a denial of service (CPU consumption) via a file with many repeating inputs.
When was CVE-2012-2098 disclosed?
CVE-2012-2098 was first published in the National Vulnerability Database on June 29, 2012, with the most recent update on April 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2012-2098 actively exploited?
CVE-2012-2098 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 13% probability of exploitation in the next 30 days, which ranks it in the top 4.2% of all scored CVEs.
How do I remediate CVE-2012-2098?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2012-2098, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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