How severe is CVE-2011-1554?

CVE-2011-1554 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2011-1554 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-1554?

CVE-2011-1554 primarily affects T1lib. In total, 64 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-1554?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2011-1554 published?

CVE-2011-1554 was published on 2011-03-31 and last updated on 2026-06-16.

CVE-2011-1554

CVE-2011-1554 is a medium-severity vulnerability in T1lib with a CVSS 2.0 base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-189.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 5% (92nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-189
Affected product: T1lib
Published: 2011-03-31
Last modified: 2026-06-16

Description

Off-by-one error in t1lib 5.1.2 and earlier, as used in Xpdf before 3.02pl6, teTeX, and other products, allows remote attackers to cause a denial of service (application crash) via a PDF document containing a crafted Type 1 font that triggers an invalid memory read, integer overflow, and invalid pointer dereference, a different vulnerability than CVE-2011-0764.

Frequently asked questions

What is CVE-2011-1554?: Off-by-one error in t1lib 5.1.2 and earlier, as used in Xpdf before 3.02pl6, teTeX, and other products, allows remote attackers to cause a denial of service (application crash) via a PDF document containing a crafted Type 1 font that triggers an invalid memory read, integer overflow, and invalid pointer dereference, a different vulnerability than CVE-2011-0764.
How severe is CVE-2011-1554?: CVE-2011-1554 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2011-1554 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-1554?: CVE-2011-1554 primarily affects T1lib. In total, 64 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-1554?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-1554 published?: CVE-2011-1554 was published on 2011-03-31 and last updated on 2026-06-16.

References

Affected products (64)

cpe:2.3:a:t1lib:t1lib:*:*:*:*:*:*:*:*
cpe:2.3:a:t1lib:t1lib:0.1:alpha:*:*:*:*:*:*
cpe:2.3:a:t1lib:t1lib:0.2:beta:*:*:*:*:*:*
cpe:2.3:a:t1lib:t1lib:0.3:beta:*:*:*:*:*:*
cpe:2.3:a:t1lib:t1lib:0.4:beta:*:*:*:*:*:*
cpe:2.3:a:t1lib:t1lib:0.5:beta:*:*:*:*:*:*
cpe:2.3:a:t1lib:t1lib:0.6:beta:*:*:*:*:*:*
cpe:2.3:a:t1lib:t1lib:0.7:beta:*:*:*:*:*:*
cpe:2.3:a:t1lib:t1lib:0.8:beta:*:*:*:*:*:*
cpe:2.3:a:t1lib:t1lib:0.9:*:*:*:*:*:*:*
cpe:2.3:a:t1lib:t1lib:0.9.1:*:*:*:*:*:*:*
cpe:2.3:a:t1lib:t1lib:0.9.2:*:*:*:*:*:*:*
cpe:2.3:a:t1lib:t1lib:1.0:*:*:*:*:*:*:*
cpe:2.3:a:t1lib:t1lib:1.0.1:*:*:*:*:*:*:*
cpe:2.3:a:t1lib:t1lib:1.1.0:*:*:*:*:*:*:*
cpe:2.3:a:t1lib:t1lib:1.1.1:*:*:*:*:*:*:*
cpe:2.3:a:t1lib:t1lib:1.2:*:*:*:*:*:*:*
cpe:2.3:a:t1lib:t1lib:1.3:*:*:*:*:*:*:*
cpe:2.3:a:t1lib:t1lib:1.3.1:*:*:*:*:*:*:*
cpe:2.3:a:t1lib:t1lib:5.0.0:*:*:*:*:*:*:*
cpe:2.3:a:t1lib:t1lib:5.0.1:*:*:*:*:*:*:*
cpe:2.3:a:t1lib:t1lib:5.0.2:*:*:*:*:*:*:*
cpe:2.3:a:t1lib:t1lib:5.1.0:*:*:*:*:*:*:*
cpe:2.3:a:t1lib:t1lib:5.1.1:*:*:*:*:*:*:*
cpe:2.3:a:foolabs:xpdf:0.5a:*:*:*:*:*:*:*
cpe:2.3:a:foolabs:xpdf:0.7a:*:*:*:*:*:*:*
cpe:2.3:a:foolabs:xpdf:0.91a:*:*:*:*:*:*:*
cpe:2.3:a:foolabs:xpdf:0.91b:*:*:*:*:*:*:*
cpe:2.3:a:foolabs:xpdf:0.91c:*:*:*:*:*:*:*
cpe:2.3:a:foolabs:xpdf:0.92a:*:*:*:*:*:*:*
cpe:2.3:a:foolabs:xpdf:0.92b:*:*:*:*:*:*:*
cpe:2.3:a:foolabs:xpdf:0.92c:*:*:*:*:*:*:*
cpe:2.3:a:foolabs:xpdf:0.92d:*:*:*:*:*:*:*
cpe:2.3:a:foolabs:xpdf:0.92e:*:*:*:*:*:*:*
cpe:2.3:a:foolabs:xpdf:0.93a:*:*:*:*:*:*:*
cpe:2.3:a:foolabs:xpdf:0.93b:*:*:*:*:*:*:*
cpe:2.3:a:foolabs:xpdf:0.93c:*:*:*:*:*:*:*
cpe:2.3:a:foolabs:xpdf:1.00a:*:*:*:*:*:*:*
cpe:2.3:a:foolabs:xpdf:3.0.1:*:*:*:*:*:*:*
cpe:2.3:a:foolabs:xpdf:3.02pl1:*:*:*:*:*:*:*

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CVE-2011-5244 — Medium (CVSS 6.8): Multiple off-by-one errors in the (1) token and (2) linetoken functions in backend/dvi/mdvi-lib/afmparse.c in t1lib, as…
CVE-2011-0433 — Medium (CVSS 6.8): Heap-based buffer overflow in the linetoken function in afmparse.c in t1lib, as used in teTeX 3.0.x, GNOME evince, and…
CVE-2011-0764 — Medium (CVSS 6.8): t1lib 5.1.2 and earlier, as used in Xpdf before 3.02pl6, teTeX, and other products, uses an invalid pointer in…
CVE-2011-1553 — Medium (CVSS 4.3): Use-after-free vulnerability in t1lib 5.1.2 and earlier, as used in Xpdf before 3.02pl6, teTeX, and other products,…

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