CVE-2022-48620

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2024-01-12. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: None knownExposed: 0

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

uev (aka libuev) before 2.4.1 has a buffer overflow in epoll_wait if maxevents is a large number.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
60(Track)
EG Risk 60/100SSVC: 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
Severity98% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
70%
KEV
Not listed

Published

January 12, 2024

Last Modified

January 25, 2026

Advisory Details (7)

Auto-updated Sep 17, 2026
Patch available. Sources: github_commit.
generic Patch Available

[SECURITY] [DLA 4454-1] libuev security update

https://lists.debian.org/debian-lts-announce/2026/01/msg00026.html
generic

Possible event buffer overrun · Issue #27 · troglobit/libuev · GitHub

https://github.com/troglobit/libuev/issues/27
generic

Comparing v2.4.0...v2.4.1 · troglobit/libuev · GitHub

https://github.com/troglobit/libuev/compare/v2.4.0...v2.4.1
github_commit Patch Available

commit 2d9f1c9ce655 (troglobit/libuev)

Patch available: troglobit/libuev v2.4.1 (contains commit 2d9f1c9ce655)

https://github.com/troglobit/libuev/commit/2d9f1c9ce655cc38511aeeb6e95ac30914f7aec9
generic

[SECURITY] Fedora 39 Update: libuev-2.4.1-1.fc39 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/P2XZESYGE6XDWAPFUOX26ZWJV2JWMMM5/
generic

[SECURITY] Fedora 40 Update: libuev-2.4.1-1.fc40 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/E6RLVLJGDKTEVJP446TFDANHB4LHRAOP/
generic

[SECURITY] Fedora 38 Update: libuev-2.4.1-1.fc38 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2J4UB4KXWCCTZCE53B6SFIREZ57INK7T/

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
libuev2.3.1-12.3.1-1+deb11u1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
libuev2.4.0-1.12.4.0-1.1+deb12u1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
libuev—2.4.1-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
libuev—2.4.1-1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 4× in last 7d / 23× 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 159 total refreshes for this CVE.

  1. 2026-09-20 20:13 UTCEPSS rescore
  2. 2026-09-16 14:05 UTCEPSS rescore
  3. 2026-09-16 05:11 UTCEPSS rescore
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  14. 2026-09-03 08:30 UTCOSV refresh
  15. 2026-09-02 14:09 UTCEPSS rescore
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  1. 2026-08-19 17:01 UTCEPSS rescore
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  4. 2026-08-16 21:56 UTCOSV refresh
  5. 2026-08-16 14:53 UTCEPSS rescore
  6. 2026-08-16 02:12 UTCEPSS rescore
  7. 2026-08-15 01:27 UTCEPSS rescore
  8. 2026-08-13 21:58 UTCEPSS rescore
  9. 2026-08-12 13:48 UTCEPSS rescore
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  20. 2026-08-01 16:06 UTCOSV refresh
  21. 2026-08-01 04:13 UTCEPSS rescore
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  23. 2026-07-30 16:25 UTCEPSS rescore
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  25. 2026-07-28 15:34 UTCEPSS rescore
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  32. 2026-07-23 02:16 UTCEG score recompute
  33. 2026-07-22 23:03 UTCEG score recompute
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  45. 2026-07-16 17:00 UTCEPSS rescore
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  48. 2026-07-15 01:58 UTCEPSS rescore
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  50. 2026-07-14 22:55 UTCOSV refresh
  51. 2026-07-13 22:28 UTCEPSS rescore
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  53. 2026-07-13 06:11 UTCEPSS rescore
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  71. 2026-06-27 03:07 UTCEPSS rescore
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  73. 2026-06-26 23:39 UTCOSV refresh
  74. 2026-06-25 13:48 UTCEPSS rescore
  75. 2026-06-25 13:48 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2022-48620?
CVE-2022-48620 is a critical vulnerability published on January 12, 2024. uev (aka libuev) before 2.4.1 has a buffer overflow in epoll_wait if maxevents is a large number.
When was CVE-2022-48620 disclosed?
CVE-2022-48620 was first published in the National Vulnerability Database on January 12, 2024, with the most recent update on January 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-48620 actively exploited?
CVE-2022-48620 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 30.4% of all scored CVEs.
What is the CVSS score of CVE-2022-48620?
CVE-2022-48620 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2022-48620?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-48620, 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.

Dependency Blast Radius

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