CVE-2016-1925: Integer underflow in header.c in lha allows remote attackers to have unspecified impact via a large header siz

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CRITICAL 9.8REMOTEMITIGATE

CVE-2016-1925 is a critical-severity flaw (CVSS 9.8) affecting lha for unix. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Integer underflow in header.c in lha allows remote attackers to have unspecified impact via a large header size value for the (1) level0 or (2) level1 header in a lha archive, which triggers a buffer overflow.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	3.0% (top 13%)
CISA exploited list	No
Weakness	CWE-191
Published	2017-01-23
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: lha for unix project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2017-01-23 21:59 UTCPublished CVE record published
2026-06-17 00:42 UTCUpdated Record last modified

lha for unix project lha for unix MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy lha-for-unix || rpm -q lha-for-unix || lha-for-unix --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2016-1925?

lha for unix: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2016-1925 being exploited?

CVE-2016-1925 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2016-1925 affect?

CVE-2016-1925 affects lha for unix. Severity is critical (CVSS 9.8). Integer underflow in header.c in lha allows remote attackers to have unspecified impact via a large header size value for the (1) level0 or (2) level1 header in a lha archive, which triggers a buffer overflow.

How urgent is CVE-2016-1925?

Priority 61/100. Critical severity; Remotely exploitable, no login, no user action

References

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