CVE-2025-14847
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Zlib compressed protocol header length confusion may allow memory read
rank 85 = 40 + 22 + 9 + 6 + 8
rank@v1 · act now
Someone is already using it
CISA KEV catalog · public proof-of-concept · FIRST EPSS
EPSS 0.83218 · CISA KEV listed · without this subject the record ranks 45
What it costs you if it fires
NVD CVSS base score, then the CNA's own
CVSS 8.7, from the CNA · without this subject the record ranks 63
It is getting worse, not staying still
FIRST EPSS series, rescorings and bad loads removed
rose on 2025-12-30 · without this subject the record ranks 76
How much of the world it touches
NVD CPE configurations
6 products in the CPE ranges · without this subject the record ranks 79
Someone else already set the date
CISA KEV remediation due date
CISA remediation date held · without this subject the record ranks 77
$2.54M = $4.99M incident cost x 0.6121449559255632 exposure x 0.83218 likelihood
udv@v1 · unaudited · wrong for you until you say what you run
$4.99M is the cost of a breach that happened, from IBM Cost of a Data Breach Report 2026, global average. It is not the value of any asset of yours. That average already covers breaches of every severity, so scaling it by exposure understates a partial-impact record. That is an assumption, not a measurement. Your own asset value goes in the decision record.
Hindsight · the state
Foresight · where to check next
No weakness class or product neighbourhood is held for this record, so this index cannot name anywhere to check next. That is an absence in the record, not a finding about the software.
Running MongoDB Server? Check your version
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Harm, if it fires from the vector and the weakness
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CISA KEV & Federal Remediation Deadline from the record and CISA
The fix, and how long it's been waiting.
Exploit Status & Known PoCs a ladder, not a score
Current rung: Exploited in the wild · CISA KEV listed, 2025-12-29.
Affected & Fixed Versions as published
Show all 6 published ranges
A rung lights from a row in the index, never from an assessment. "Held sources" is the true scope of the claim: this index reads the CVE record, NVD, CISA KEV, FIRST's EPSS and public proof-of-concept repositories, and it does not observe attacks.
What it is stated by the CNA
Mismatched length fields in Zlib compressed protocol headers may allow a read of uninitialized heap memory by an unauthenticated client. This issue affects all MongoDB Server v7.0 prior to 7.0.28 versions, MongoDB Server v8.0 versions prior to 8.0.17, MongoDB Server v8.2 versions prior to 8.2.3, MongoDB Server v6.0 versions prior to 6.0.27, MongoDB Server v5.0 versions prior to 5.0.32, MongoDB Server v4.4 versions prior to 4.4.30, MongoDB Server v4.2 versions greater than or equal to 4.2.0, MongoDB Server v4.0 versions greater than or equal to 4.0.0, and MongoDB Server v3.6 versions greater than or equal to 3.6.0. receipt
NVD's analysis a second authority
- weakness
- CWE-130
- affected versions
- mongodb >= 3.6.0 < 4.4.30; mongodb >= 5.0.0 < 5.0.32; mongodb >= 6.0.0 < 6.0.27; and 3 more, listed in full below
- also scored by
- [email protected] 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X · [email protected] 7.5…
check it yourself jira.mongodb.org receipt
Dated events
Movement the material steps
This score more than doubled inside 72 hours. Both observations are in the full history below.
Show all 48 observations
48 observations held. A highlighted step crossed a promotion threshold. A step marked with a scoring model moved because the instrument was replaced, not because the vulnerability changed. receipt
The full biography
Listed by CISA 10 days after it published, exploit probability more than doubled between 2026-01-18 and 2026-01-20 (0.2264 → 0.51951) and the record had been public for 8 months when this index was last written.
No material movement in 19 days as of the last ingest this index recorded.
Siblings and hubs
Records related to this one
None. No alias set, and nothing in the corpus cites this identifier or shares its product family within 60 days.
Browse the index from here
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What usually comes next
Everything above needs no account. What is below is work: assembling it, scoping it to your estate, watching it, and handing it to someone else.