CVE-2021-45067

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2022-01-15. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 4%CVSS: 5.5Exploit: Elevated riskExposed: 0

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

Acrobat Reader DC version 21.007.20099 (and earlier), 20.004.30017 (and earlier) and 17.011.30204 (and earlier) are affected by an Access of Memory Location After End of Buffer vulnerability that could lead to disclosure of sensitive memory. An attacker could leverage this vulnerability to bypass mitigations such as ASLR. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
45(Track)
EG Risk 45/100SSVC: 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
Severity55% × 45%
Exploitation40% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
4%
EPSS %ILE
89%
KEV
Not listed

Published

January 14, 2022

Last Modified

November 21, 2024

References (2)

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 44× 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 107 total refreshes for this CVE.

  1. 2026-07-26 14:52 UTCEPSS rescore
  2. 2026-07-26 14:52 UTCEPSS rescore
  3. 2026-07-25 14:15 UTCEPSS rescore
  4. 2026-07-24 14:15 UTCEPSS rescore
  5. 2026-07-23 14:16 UTCEPSS rescore
  6. 2026-07-23 02:05 UTCEG score recompute
  7. 2026-07-22 22:52 UTCEG score recompute
  8. 2026-07-22 14:06 UTCEPSS rescore
  9. 2026-07-21 15:22 UTCEPSS rescore
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  11. 2026-07-20 17:05 UTCEPSS rescore
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  1. 2026-07-09 19:07 UTCEPSS rescore
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  22. 2026-06-25 13:48 UTCEPSS rescore
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  24. 2026-06-24 14:03 UTCEPSS rescore
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  26. 2026-06-23 21:31 UTCEPSS rescore
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  28. 2026-06-22 14:24 UTCEPSS rescore
  29. 2026-06-21 14:55 UTCEPSS rescore
  30. 2026-06-21 01:58 UTCEPSS rescore
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  41. 2026-06-15 17:46 UTCEPSS rescore
  42. 2026-06-14 23:15 UTCEPSS rescore
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  44. 2026-06-13 22:58 UTCEPSS rescore
  45. 2026-06-13 22:58 UTCEPSS rescore
  46. 2026-06-12 23:10 UTCEPSS rescore
  47. 2026-06-11 13:58 UTCEPSS rescore
  48. 2026-06-11 13:58 UTCEPSS rescore
  49. 2026-06-10 22:16 UTCEPSS rescore
  50. 2026-06-10 22:16 UTCEPSS rescore
  51. 2026-06-10 13:20 UTCEPSS rescore
  52. 2026-06-08 14:15 UTCEPSS rescore
  53. 2026-06-08 14:15 UTCEPSS rescore
  54. 2026-06-07 15:23 UTCEPSS rescore
  55. 2026-06-07 15:23 UTCEPSS rescore
  56. 2026-06-06 13:46 UTCEPSS rescore
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  58. 2026-06-05 22:45 UTCEPSS rescore
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  61. 2026-06-04 13:10 UTCEPSS rescore
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  63. 2026-06-02 20:11 UTCEPSS rescore
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  65. 2026-06-01 13:50 UTCEPSS rescore
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  67. 2026-05-31 22:29 UTCEPSS rescore
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  69. 2026-05-31 00:15 UTCEPSS rescore
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  71. 2026-05-29 13:42 UTCEPSS rescore
  72. 2026-05-28 13:43 UTCEPSS rescore
  73. 2026-05-28 13:43 UTCEPSS rescore
  74. 2026-05-27 13:39 UTCEPSS rescore
  75. 2026-05-27 13:39 UTCEPSS rescore

Publicly available exploits

(1 reference)

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

  • GitHub PoChacksysteam/CVE-2021-45067
    First seen Oct 13, 2022

    Adobe Reader DC Information Leak Exploit

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2021-45067?
CVE-2021-45067 is a medium vulnerability published on January 14, 2022. Acrobat Reader DC version 21.007.20099 (and earlier), 20.004.30017 (and earlier) and 17.011.30204 (and earlier) are affected by an Access of Memory Location After End of Buffer vulnerability that could lead to disclosure of sensitive memory. An attacker could leverage this vulnerability to bypass…
When was CVE-2021-45067 disclosed?
CVE-2021-45067 was first published in the National Vulnerability Database on January 14, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2021-45067 actively exploited?
CVE-2021-45067 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 4% probability of exploitation in the next 30 days, which ranks it in the top 10.9% of all scored CVEs.
What is the CVSS score of CVE-2021-45067?
CVE-2021-45067 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2021-45067?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-45067, 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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