What is CVE-2017-18005?

CVE-2017-18005 is a medium-severity vulnerability in Exiv2, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2017-12-31.

How severe is CVE-2017-18005?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Is CVE-2017-18005 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

NULL pointer dereference in Exiv2

CVE-2017-18005

Exiv2 0.26 has a Null Pointer Dereference in the Exiv2::DataValue::toLong function in value.cpp, related to crafted metadata in a TIFF file.

Published 2017-12-31 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.008 (54.8th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 54.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Exiv2 — versions 0.26
Debian Linux — versions 10.0

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

Public proof-of-concept exploits

andir/nixos-issue-db-example

References

github.com/Exiv2/exiv2/issues/168 (Exploit, Third Party Advisory, Issue Tracking)
lists.debian.org/debian-lts-announce/2023/01/msg00004.html (mailing-list, Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2017-18005?: CVE-2017-18005 is a medium-severity vulnerability in Exiv2, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2017-12-31.
How severe is CVE-2017-18005?: Medium severity. CVSS v3 base score is 5.5 out of 10.
Is CVE-2017-18005 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.