CVE-2018-25099

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2024-03-18. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 9.8Exploit: NoneExposed: 0

A fix is available — apply it.

In the CryptX module before 0.062 for Perl, gcm_decrypt_verify() and chacha20poly1305_decrypt_verify() do not verify the tag.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
38.7%
KEV
Not listed

Published

March 18, 2024

Last Modified

April 15, 2026

Advisory Details (3)

Auto-updated May 4, 2026
No patch confirmed yet.
generic

Changes - metacpan.org

https://metacpan.org/dist/CryptX/changes
generic

Wycheproof failing GCM test - invalid/modified tag by karel-m · Pull Request #451 · libtom/libtomcrypt · GitHub

https://github.com/libtom/libtomcrypt/pull/451
generic

gcm_decrypt_verify() no longer verifies the provided tag · Issue #47 · DCIT/perl-CryptX · GitHub

https://github.com/DCIT/perl-CryptX/issues/47

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulibcryptx-perl (0.080-2ubuntu0.1~esm1) @ noble2026-05-22ubuntu

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.

Weakness Classification(1)

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

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 10× in last 7d / 50× 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 125 total refreshes for this CVE.

  1. 2026-07-11 09:22 UTCOSV refresh
  2. 2026-07-11 08:24 UTCEPSS rescore
  3. 2026-07-09 19:06 UTCEPSS rescore
  4. 2026-07-08 15:11 UTCEPSS rescore
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  1. 2026-06-24 14:02 UTCEPSS rescore
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  6. 2026-06-22 16:05 UTCOSV refresh
  7. 2026-06-22 14:23 UTCEPSS rescore
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  24. 2026-06-12 23:09 UTCEPSS rescore
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  26. 2026-06-11 13:57 UTCEPSS rescore
  27. 2026-06-10 22:16 UTCEPSS rescore
  28. 2026-06-10 13:19 UTCEPSS rescore
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  31. 2026-06-07 15:22 UTCEPSS rescore
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  39. 2026-06-05 02:39 UTCOSV refresh
  40. 2026-06-04 13:10 UTCEPSS rescore
  41. 2026-06-02 20:11 UTCEPSS rescore
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  43. 2026-06-01 13:50 UTCEPSS rescore
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  45. 2026-05-31 22:29 UTCEPSS rescore
  46. 2026-05-31 00:14 UTCEPSS rescore
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  48. 2026-05-29 13:41 UTCEPSS rescore
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  51. 2026-05-27 13:38 UTCEPSS rescore
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  65. 2026-05-22 04:14 UTCEG score recompute
  66. 2026-05-22 04:14 UTCVendor advisory
  67. 2026-05-22 04:14 UTCGHSA enrichment
  68. 2026-05-21 22:40 UTCEPSS rescore
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  75. 2026-05-20 22:37 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2018-25099?
CVE-2018-25099 is a critical vulnerability published on March 18, 2024. In the CryptX module before 0.062 for Perl, gcmdecryptverify() and chacha20poly1305decryptverify() do not verify the tag.
When was CVE-2018-25099 disclosed?
CVE-2018-25099 was first published in the National Vulnerability Database on March 18, 2024, with the most recent update on April 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2018-25099 actively exploited?
CVE-2018-25099 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 38.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2018-25099?
CVE-2018-25099 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2018-25099?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-25099, 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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