CVE-2022-1908Public exploit

Memory disclosure and crash via markup boundary error

Published May 27, 2022 · Updated Aug 3, 2024

Buffer over-read in libmobi before 0.11 allows local users to read adjacent memory or crash an application via a corrupt ebook. The markup scanners in src/parse_rawml.c dereference the current input pointer after a scan reaches its boundary because three self-closing-tag checks lack an end-of-buffer guard. A local user must cause a person to open a crafted Mobipocket file; the resulting out-of-bounds read can expose process memory or terminate the consuming application.

CVSS severity3.6
Low
EPSS probability0.70%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer over-read in libmobi before 0.11 allows local users to read adjacent memory or crash an application via a corrupt ebook. The markup scanners in src/parse_rawml.c dereference the current input pointer after a scan reaches its boundary because three self-closing-tag checks lack an end-of-buffer guard. A local user must cause a person to open a crafted Mobipocket file; the resulting out-of-bounds read can expose process memory or terminate the consuming application.

The record

CVE
CVE-2022-1908
Published
May 27, 2022
Updated
Aug 3, 2024
Vendor
bfabiszewski
Product
libmobi
Classifications
CWE-126, CWE-125, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 27, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <0.11

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

bfabiszewski · libmobiversion=unspecified <0.11

Published CVSS scores

5.8NIST NVDAV:N/AC:M/Au:N/C:P/I:N/A:P
3.6huntr.devCVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:L
8.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-126Buffer Over-read
CWE-125Out-of-bounds Read
T1203Exploitation for Client Execution

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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