CVE-2013-2131

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 10.9% 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 weekWeaponized
5.0EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 11%CVSS v2: 5.0Exploit: Exploit-DB (verified) · epss top5pct · public exploitExposed: 0

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

Format string vulnerability in the rrdtool module 1.4.7 for Python, as used in Zenoss, allows context-dependent attackers to cause a denial of service (crash) via format string specifiers to the rrdtool.graph function.

CVSS v2.0 (legacy)
5.0MEDIUMNVD never assigned a CVSS v3 rating to this CVE
EG Score
5.0(low)
EG Risk
53(Track)
EG Risk 53/100SSVC: 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%
Exploitation65% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
11%
EPSS %ILE
95%
KEV
Not listed

Published

January 4, 2015

Last Modified

May 6, 2026

References (12)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 10× 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.

  1. 2026-07-26 13:47 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 01:09 UTCEG score recompute
  5. 2026-07-23 00:13 UTCEG score recompute
  6. 2026-07-22 21:51 UTCEG score recompute
  7. 2026-07-22 14:04 UTCEPSS rescore
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  9. 2026-07-21 22:48 UTCOSV refresh
  10. 2026-07-21 15:21 UTCEPSS rescore
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  1. 2026-07-08 15:10 UTCEPSS rescore
  2. 2026-07-04 17:56 UTCOSV refresh
  3. 2026-07-04 06:27 UTCEPSS rescore
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  5. 2026-06-30 23:19 UTCEPSS rescore
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  21. 2026-06-18 17:49 UTCEPSS rescore
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  25. 2026-06-16 17:49 UTCEPSS rescore
  26. 2026-06-16 17:49 UTCEPSS rescore
  27. 2026-06-16 05:13 UTCOSV refresh
  28. 2026-06-15 17:44 UTCEPSS rescore
  29. 2026-06-14 23:14 UTCEPSS rescore
  30. 2026-06-13 22:57 UTCEPSS rescore
  31. 2026-06-12 23:08 UTCEPSS rescore
  32. 2026-06-11 13:56 UTCEPSS rescore
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  43. 2026-05-31 22:28 UTCEPSS rescore
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  45. 2026-05-31 00:14 UTCEPSS rescore
  46. 2026-05-31 00:14 UTCEPSS rescore
  47. 2026-05-29 13:41 UTCEPSS rescore
  48. 2026-05-29 13:41 UTCEPSS rescore
  49. 2026-05-28 14:15 UTCEG score recompute
  50. 2026-05-28 14:15 UTCGHSA enrichment
  51. 2026-05-28 13:42 UTCEPSS rescore
  52. 2026-05-28 13:42 UTCEPSS rescore
  53. 2026-05-28 13:42 UTCEPSS rescore
  54. 2026-05-27 13:38 UTCEPSS rescore
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  56. 2026-05-26 13:41 UTCEPSS rescore
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  58. 2026-05-26 07:16 UTCEPSS rescore
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  60. 2026-05-24 16:43 UTCEPSS rescore
  61. 2026-05-22 21:15 UTCEPSS rescore
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  64. 2026-05-21 22:39 UTCEPSS rescore
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Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-38521✓ verified
    First seen May 18, 2013

    Python RRDtool Module - Function Format String

    Open source ↗

Related CVEs(same CWE)

Frequently asked(4)

What is CVE-2013-2131?
CVE-2013-2131 is a medium vulnerability published on January 4, 2015. Format string vulnerability in the rrdtool module 1.4.7 for Python, as used in Zenoss, allows context-dependent attackers to cause a denial of service (crash) via format string specifiers to the rrdtool.graph function.
When was CVE-2013-2131 disclosed?
CVE-2013-2131 was first published in the National Vulnerability Database on January 4, 2015, with the most recent update on May 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2013-2131 actively exploited?
CVE-2013-2131 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 11% probability of exploitation in the next 30 days, which ranks it in the top 4.6% of all scored CVEs.
How do I remediate CVE-2013-2131?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2013-2131, 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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